Filtration Loss Research Articles

КОНСТРУКТИВНО-ТЕХНОЛОГИЧЕСКИЕ РЕШЕНИЯ ДЛЯ СОЗДАНИЯ И ВОССТАНОВЛЕНИЯ ПОКРЫТИЙ ОРОСИТЕЛЬНЫХ КАНАЛОВ

Purpose: to develop design and technological solutions for the creation and restoration of destroyed seepage control concrete linings of irrigation canals using modern construction materials. Materials and methods: to create and restore the irrigation canal coatings, the projects of improved structural, process and technical solutions were used with modern materials based on geocomposites and polymers, which made it possible to restore the protective coating of canals and other water-conducting hydraulic structures most effectively and quickly. To define the specific seepage discharge through damage, a calculation method of water permeability of an impervious concrete coating was used, taking into account damage colmatation. Results. Process and technical solutions developed at the level of applications and patents for inventions are characterized by increased efficiency and reliability, which consist in eliminating filtration losses and deformations, while increasing the repaired area durability due to the increased physical and mechanical features of the composition material designs. The proposed calculation methodology for water permeability of an impervious concrete coating, taking into account the damage colmatation, made it possible to determine the specific seepage discharge through damage equal to 0.112 sq. m per day. On the basis of the performed calculation, it is possible to make a decision on the feasibility of reconstructing certain damage to the canal concrete lining, both during their clogging. Conclusions: the use of the developed design and technological solutions for irrigation canal lining damage repairing will increase the seepage control lining imperviousity, increase reliability and prevent the formation of underfloor spaces under protective concrete and reinforced concrete elements.

An experimental analysis on nanoparticles role in drilling fluids

The study around nanotechnology has increased in the last decade or so, with rise in applications in many industries. There are now many nanotechnology-based products available like in healthcare, defense, coating industries etc. It has seen rise in usage in oil and gas industry as well. Application of nano particles in water based muds results in reduction of fluid loss and hence increases the wellbore stability and drilling efficiency. In this study, we have examined the fluid loss on water-based mud by adding graphene nanoparticles as additive and estimated the optimum value of nanoparticle composition for having less fluid loss. The results of experimental analysis for filtration loss from water-based mud with addition of graphite nanoparticles was studied and effect of friction factor was analyzed. The nanoparticles concentration added in fluid ranges from 1 to 5 lb/bbl and the size of the particles was observed to be 30–80 nm. Variation of fluid loss volume and friction coefficient under different nanoparticle composition was established.

Numerical study on the law of fracture propagation in supercritical carbon dioxide fracturing

Compared with conventional hydrofracturing fluid, SC-CO2 has the merits of no water sensitivity and effective carbon dioxide storage. At present, the research on the fracture initiation mechanism of SC-CO2 fracturing is still at the exploring phase. This paper conducts a detailed study on the fracture initiation mechanism of SC-CO2 fracturing, and establishes a fracture initiation and propagation model of flow-stress-damage coupling according to damage mechanics. A series of numerical simulation studies have been carried out on the rock physical parameters, fracturing construction parameters, natural fracture distribution and other factors that affect the fracture propagation of the reservoir to provide a reference for the SC-CO2 fracturing construction design. The findings suggest: the lower formation permeability, the less SC-CO2 filtration loss, and the larger total fracture length and width; SC-CO2 is easier to improve the reservoir continuity and result in a complex fracture network; The lower the viscosity of SC-CO2, the larger total length of fractures, and the more complex the fracture network; As the delivery of pump increases, the width of fracture continues to increase, and the total fracture length decreases; SC-CO2 has a better effect on communicating natural fractures and porous media, and the fracture network is more complex.

Development of cost-effective drilling fluid from banana peel pectin and fly ash for loss circulation control

The global demand for energy has increased the petroleum operations mutlifolds and the challenges associated with it. The loss circulation is often problematic and cost intensive. The Banana Peel Pectin (BPP) and Fly Ash (FA) provides an efficient control to loss circulation. The rheological properties viz, Plastic viscosity, gel strength suggest the increases in viscosity and gelation with increase in %BPP. The SEM analysis was performed to asses the meshing and bridging performance of BPP and FA. Theconsistencyof drilling fluid confirms its pumpability for a 4.5 h. The present work provides an efficient control of mud filtrate loss at extremely low cost.

Star Polymer for Filtration Control in Water-based Fluids

In high-performance water-based drilling fluids, filtration control is a closely monitored mud characteristic. Several problems have been found that are linked to excessive invasion of aqueous filtrate into a permeable formation. A high filtrate loss often causes thick filter cake formation that lead to tight spots in the hole. Elevated temperatures and fluid loss in deep holes can cause situations such as differential sticking of pipes. At the same time, loss of filtration control catastrophically affects the rheology of the water-based fluid via excessive thickening. Seepage of the filtrate into sensitive shale formations may lead to swelling, sloughing or even cave-in. Filtrate invasion into a production zone can lead to a condition known as water blocking, where the reservoir pressure is not strong enough to drive the aqueous filtrate out of the pores, leading to drastic reduction of oil and gas flow. In this contribution, we explore the synthesis of a novel star block copolymer fluid loss control additive using reversible addition-fragmentation chain transfer (RAFT) polymerization using arm-first approach. The star polymer developed in this work is able to provide superior filtration control performance (3 to 6 times better performance) over commercial additives. In addition, the thermal and mechanical stability of this novel material afforded direct incorporation into drilling mud formulations commonly used in the middle east drilling operations, which led to excellent fluid loss control both at room temperature and high temperature, high pressure conditions with thin filter cakes.

Infiltration optimization effort towards sustainable land-use

The degradation of land due to conversion is a global process with a significant effect on land use. The intensification of land use in Makassar City is observed to have dramatically affected water retention hydrology, thereby, leading to an increase in volume, runoff rate, and filtration loss. Therefore, it is necessary to optimize infiltration by mapping the classification of infiltration capability based on the land-use changes observed between 2005 and 2020 as well as the inundation occurring due to surface runoff. This research uses a quantitative method by calculating the run-off spatial data and statistics to determine the area with low infiltration capability in the built-up environment. The results showed a decrease in infiltration capability of 3.6% which represents 617.72 ha at critical levels in the built-up area in the last 15 years. This means it is possible for decision-makers to implement infiltration optimization steps as the alternative solution by focusing only on the land-use distribution with critical initial conditions. The findings of this research are expected to minimize surface runoff rate and excess inundation potential in order to achieve sustainable land use in Makassar City.

Effect of Two Types of Fly Ash on Rheological and Filtration Properties of Water-Based Drilling Mud

In this study, the usage of class F fly ash (brown coal) and class C fly ash (lignite) with increasing concentration in water based mud mainly composed of bentonite dispersion was investigated at ambient conditions. Experimental results indicate that efficiency of the mud is significantly controlled by type of the fly ash tested and its concentrations. The results show that Class F fly ash enhanced filtration properties (filtrate loss and mud cake) of the mud and have no effect on the rheology including, yield point, viscosity whereas the class C fly ash increased the rheology parameters and degraded water loss into the formation and filer cake thickness dramatically. This study showed that class F fly ash displays superior performance than class C fly ash. Through this study, it was reveal that class F fly ash is a promising additive to improve the filtration characteristics of bentonite based drilling fluids, thereby contributing to reducing formation damage caused by drilling mud.

Improving the rheological properties of water-based calcium bentonite drilling fluids using water-soluble polymers in high temperature applications

Abstract Most of bentonite used in modern drilling engineering is physically and chemically modified calcium bentonite. However, with the increase of drilling depth, the bottom hole temperature may reach 180 °C, thus a large amount of calcium bentonite used in the drilling fluid will be unstable. This paper covers three kinds of calcium bentonite with poor rheological properties at high temperature, such as apparent viscosity is greater than 45 mPa·s or less than 10 mPa·s, API filtration loss is greater than 25 mL/30 min, which are diluted type, shear thickening type and low-shear type, these defects will make the rheological properties of drilling fluid worse. The difference is attributed to bentonite mineral composition, such as montmorillonite with good hydration expansion performance. By adding three kinds of heat-resistant water-soluble copolymers Na-HPAN (hydrolyzed polyacrylonitrile sodium), PAS (polycarboxylate salt) and SMP (sulfomethyl phenolic resin), the rheological properties of calcium bentonite drilling fluids can be significantly improved. For example, the addition of 0.1 wt% Na-HPAN and 0.1 wt% PAS increased the apparent viscosity of the XZJ calcium bentonite suspension from 4.5 to 19.5 mPa·s at 180 °C, and the filtration loss also decreased from 20.2 to 17.8 mL.

Polyanionic cellulose/hydrophilic monomer copolymer grafted silica nanocomposites as HTHP drilling fluid-loss control agent for water-based drilling fluids

The objective of this study is to improve the performance of water-based drilling fluids for high temperature, salt and calcium resistance in the exploration of deep and ultra-deep wells. In this study, poly(anionic cellulose), 2-acrylamido-2-methylpropanesulfonic acid (AMPS), diallyldimethyl ammonium chloride (DMDAAC), N,N-dimethylacrylamide (DMAA), sodium p-styrene sulfonate (SSS) and silica nanoparticles were used as raw materials to form copolymer PAC-DDAS-SiO2 by free radical copolymerization in aqueous solution. Using X-ray photoelectron spectroscopy (XPS), Monomers were polymerized successfully. The rheological properties of the drilling fluid were maintained after the addition of copolymers to the drilling fluid, the filtration volume after aging at 260℃ is only 8 mL. At the same time, the 35 wt% Cacl2 copolymer base slurry aged at 200℃ showed a filtration loss of only 14.4 mL. The polymer helped the drilling fluid resist 10 wt% Nacl at 260℃. Analysis of the filter cake after ageing, the microscopic morphology of clay-polymer interactions in the drilling fluid after ageing and the particle size of the drilling fluid was carried out. The presence of a large number of anionic groups in the chains on the copolymer spheres formed hydrogen and ionic bonds with the clay, adsorbed Na+ and Ca2+ and prevented the intrusion, thus ensuring the normal size of the clay particles, resulting in the formation of a wider particle size distribution phenomenon in the drilling fluid, dense filter cake and reduced filtration volume.

Performance of water-based drilling fluids for deepwater and hydrate reservoirs: Designing and modelling studies

In deepwater drilling, the properties of water-based drilling fluids change remarkably due to low temperature and high pressure, which have a significant effect on lost circulation, wellbore instability and the window between pore pressure and fracturing pressure. The present work investigates the influence of low temperature and high pressure on polymer and nanoparticle (boron nitride (BN)) based drilling fluids with an aim to improve their rheological properties and fluid loss control. The amplitude and frequency sweep tests were conducted to understand the viscoelastic nature of the samples. The amplitude sweep tests confirmed the structural stability of the designed fluid within the studied sweep frequency. The study reveals that storage modulus (Gʹ) and loss modulus (Gʺ) of the samples are enhanced with increasing concentration of BN nanoparticles. Their viscoelastic range also increases due to the intermolecular interaction within the structure of the fluid in the presence of the nanoparticles. Within the linear viscoelastic range (LVER), all the samples show the dominance of elastic modulus than viscous modulus which delineates the solid-like behaviour. The results of rheological tests of drilling fluid containing BN nanoparticles indicate a significant reduction in plastic viscosity (PV), yield point (YP) and apparent viscosity (AV). The rheological studies conducted at different temperatures (from 10 °C to −5 °C) and pressures (from 7.8 MPa to11 MPa) reveal the minimum effect of pressure and temperature on the rheology of samples, which are desirable for their applications in hydrate and deepwater drilling. The filtration loss experiments conducted at 30 °C and 0.69 MPa show a large reduction in fluid loss volume (60.6%) and filter cake thickness (90%) for the sample with 0.4 wt% BN nanoparticles compared to that of the sample without nanoparticles. The filter cake permeability is also in the favourable range with 0.008 mD which shows a 94% reduction compared to the sample without nanoparticles. A regression model was developed to mathematically describe the experimental results, which demonstrates a good fitting with the statistical data of fluid loss volume, thickness and permeability of the filter cake.

Evaluation of endogenous miRNA reference genes across different zebrafish strains, developmental stages and kidney disease models

The majority of kidney diseases arise from the loss of podocytes and from morphological changes of their highly complex foot process architecture, which inevitably leads to a reduced kidney filtration and total loss of kidney function. It could have been shown that microRNAs (miRs) play a pivotal role in the pathogenesis of podocyte-associated kidney diseases. Due to their fully functioning pronephric kidney, larval zebrafish have become a popular vertebrate model, to study kidney diseases in vivo. Unfortunately, there is no consensus about a proper normalization strategy of RT-qPCR-based miRNA expression data in zebrafish. In this study we analyzed 9 preselected candidates dre-miR-92a-3p, dre-miR-206-3p, dre-miR-99-1, dre-miR-92b-3p, dre-miR-363-3p, dre-let-7e, dre-miR-454a, dre-miR-30c-5p, dre-miR-126a-5p for their capability as endogenous reference genes in zebrafish experiments. Expression levels of potential candidates were measured in 3 different zebrafish strains, different developmental stages, and in different kidney disease models by RT-qPCR. Expression values were analyzed with NormFinder, BestKeeper, GeNorm, and DeltaCt and were tested for inter-group differences. All candidates show an abundant expression throughout all samples and relatively high stability. The most stable candidate without significant inter-group differences was dre-miR-92b-3p making it a suitable endogenous reference gene for RT-qPCR-based miR expression zebrafish studies.

Delayed Breaker Systems To Remove Residual Polymer Damage in Hydraulically Fractured Reservoirs.

Hydraulic fracturing is a widely used technology to enhance the productivity of low-permeability reservoirs. Fracturing fluids using guar as the rheology builder leaves aside residual polymer layers over the fractured surface, resulting in a restricted matrix to fracture flow, causing reduced well productivity and injectivity. This research developed a specialized enzyme breaker and evaluated its efficiency in breaking linear and cross-linked guar-polymer gel as a function of time, temperature, and breaker concentration targeting a high-temperature carbonate reservoir. The study began with developing a high-temperature stable galacto-mannanase enzyme using the “protein-engineering” approach, followed by the optimization of fracturing fluids and breaker concentrations measuring their rheological properties. The thermal stability of the enzyme breaker vis-à-vis viscosity reduction and the degradation pattern of the linear and cross-linked gel observed from the break tests showed that the enzyme is stable and active up to 120 °C and can reduce viscosity by more than 99%. Further studies conducted using a high-temperature high-pressure HT-HP filter press for the visual inspection of polymer cake quality, filtration loss rates, and cake dissolution efficiency showed that a 6 h enzyme treatment degrades the filter cake by 94–98% compared to 60–70% degradation in 72 h of the natural degradation process. Coreflooding studies, under simulated reservoir conditions, showed the severity of postfracture damage (up to 99%), which could be restored up to 95% on enzyme treatment depending on the treatment protocol and the type of fracturing gel used.

Application of silica (SiO2) nanofluid and Gemini surfactants to improve the viscous behavior and surface tension of water-based drilling fluids

Further studies into drilling fluids especially to reduce the use of oil and synthetic-based drilling fluids are ever-growing due to their contributions to environmental pollution. This study, therefore, attempts to evaluate the thermal, viscosity, surface tension, and filtration loss properties of water-based drilling fluids (WBDFs) upon the addition of Gemini surfactant-silica nanofluid. This surfactant-nanofluid was formed by dissolving silica nanofluid in the surfactant solution, and ultra-sonication was used to attain homogeneity. Characterization of the Gemini surfactant-silica (SiO2) nanofluid was done by Fourier Transform Infrared Spectroscopy (FTIR). The viscosity, surface tension, and filtration loss properties were studied using the rheometer, tensiometer, and low-pressure, low-temperature (LPLT) filter press respectively. The experimental results showed that Gemini surfactants contributed to the highest increase in drilling fluid viscosity compared to a conventional surfactant. Also, when combined with silica-nanoparticles showed better thermal stability with an 11% average change in viscosity with increasing temperature and a decrease in surface tension and filtration loss both showing a 17% and 12% decrease respectively.

Modified Nanopolystyrene as a Plugging Agent for Oil-Based Drilling Fluids Applied in Shale Formation

Most nanoplugging agents have high surface free energy and tend to aggregate in oil-based drilling fluids (OBMs), failing to plug the nanopores in the formation. This paper introduces the synthesis and application of a surface-modified nanoscale polystyrene (NS) as a plugging agent for OBMs. With oleic acid acting as the surface modifier, the surface free energy of the NS can be effectively reduced, which is a crucial step in enhancing its dispersion stability in mineral oil. Besides, due to the nanoscale size and low surface free energy, NS adsorbing onto the rock surface could improve the contact angle of the mineral oil on the rock surface, reduce the imbibition amount of oil into the rock, and maintain the mechanical stability of the rock. The structure of NS was characterized by infrared spectroscopy and transmission electron microscopy. Thermal gravimetric analysis demonstrated that NS could resist up to 252 °C. The particle size distribution test showed that NS could maintain the nanoscale dispersion in mineral oil. NS could also increase the contact angle of mineral oil on the rock surface from 12 to 61° and reduce the oil spontaneous imbibition amount by 52.7%. After the addition of 2% NS to the base mud, the permeability plugging apparatus filtration loss was reduced by 67% compared with that of the base mud without NS, and in the pressure transmission test, the downstream pressure was still kept constant with no noticeable change after 60 h, showing an excellent plugging effect. Besides, after the rocks were immersed in the base mud and base mud containing 2% NS, the uniaxial compressive strength of the rock declined by 25.41 and 10.76%, respectively, indicating that NS could effectively alleviate the mechanical stability decrease of the rock.

Application of Cellulosic Fibrous Material from Agro Waste as Filtrate Loss Modifier in Aqueous Mud-Morphology at HTHP Conditions

Controlling the filtration characteristics of any drilling fluid does not only include the control of the filtrate volume penetrating into the formation; but also the ability of the mud to deposit a thin low-permeability filter cake on the wall of the wellbore quickly. The permeability of the filter cake is very dependent on the particle size because when small size particles are used, the permeability decreases, because of the fact that colloidal particles get packed very tightly. This study investigated the filtration and filter cake characteristics of water-based mud (WBM) using fibrous cellulose from Tiger Nut waste and the guar gum. American Petroleum Institute (API) Recommended Practice Standard Procedure for Field Testing Drilling Fluids, API RP 13B-1 was applied during the analysis. Statistical analysis of the experimental data was conducted and the R2 value (0.99) showed that the experimental method adopted was replicable. Mud samples B2 and C2 gave an optimum result and their mud cakes developed under High-Temperature High-Pressure (HTHP) condition were dried and further analyzed with scanning electron microscope (SEM). The results showed that the filter cakes SEM structure for cellulosic fibrous from agro waste and guar gum exhibits similar characteristics; and the mud cakes was firm after soaking with 15% HCl for thirty minutes but started dissolving after one hour. The SEM analysis inferred that the filter cake morphology shows a good particle-pore interlocking for sample C2 than B2.

Nano-silica/polymer composite as filtrate reducer in water-based drilling fluids

Wellbore instability and reservoir damage caused by filtrate of water-based drilling fluids (WDFs) invading the formation are extremely problematic issues in the process of oil excavation. Herein, we reported a novel polymer with core-shell structure based on modified silica nanoparticles as a filtrate reducer (NS-DA) in WDFs. Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (NMR) results revealed that the target product NS-DA had been gained. The results of thermogravimetric analysis (TGA) showed that the thermal decomposition temperature of NS-DA occurred after 293 °C. Meanwhile, NS-DA exhibited the most outstanding filtration loss reduction ability compared to three commercially filtrate reducer (Driscal D. PAC-Lv and CMC) in the filtration loss test prescribed by the American Petroleum Institute. Specifically, the filtration loss of Driscal D/WDFs, PAC-Lv/WDFs and CMC/WDFs were 16.2 mL, 18.4 mL and 19.8 mL after hot rolling at 180 °C for 16 h, respectively, while the filtration loss of NS-DA/WDFs was only 5.6 mL. The mechanism of NS-DA in controlling filtration loss was investigated by Zeta potential measurements, particle size distribution analysis and mud cake analysis. The results showed that NS-DA molecular chains were firmly adsorbed on the surface of clay particles through hydrogen and ionic bonds, which reduced the zeta potential and the average particle size of clay particles, diminished the mud cake permeability, and thus enhanced the stability of the WDFs colloidal system. This work indicates that NS-DA has great potential for future oil excavation.

Fluid Loss Control in Water Base Mud Using Ferric Oxide Nanoparticles and Local Additives

The success of well drilling operations is heavily dependent on the drilling fluid because drilling fluids cool down and lubricate the drill bit, remove cuttings, prevent formation instability, suspend cuttings and also cake off the permeable formations, thus retarding the passage of fluid into the formation. During drilling operations, the fluid part of the drilling fluid may be lost to the formation, a huge fluid loss lead to higher operational expenses. That is why, it is vital to design the drilling mud to minimize the mud invasion in to formation and prevent fluid loss. This study focused on improving the performance of water base drilling mud by the usage of ferric oxide nanoparticles and local additives such as corn cob powder from zea-mays and coconut husk powder from cocos nucifera as fluid loss control additives in the drilling mud. The laboratory measurements included measuring the filtrate loss using the standard API low temperature low pressure (LTLP) filter test, some properties of the mud such as the mud density and pH were measured using respective apparatus. Also, the filtration properties of water-based nano and local additive drilling fluids under static conditions were investigated. It was seen from the results that the lowest filtrate loss value of 14.4ml occurred for an addition of 1.0g of ferric oxide nanoparticles acting alone as the fluid lost material. Under API standard filtration test at LTLP, more than 70% reduction in fluid loss was achieved in the presence of 0.5 - 1.5 wt% nanoparticles. The results have also shown that the filter cake developed with the nano and local additive mud indicate thin filtration, which implies high potential for reducing the differential pressure sticking problem, as well as reducing formation damage and torque and drag problems while drilling. Nanoparticles (NPs) based drilling mud with specific characteristics is thus expected to play a promising role in controlling the fluid loss and other technical challenges faced with commercial drilling mud during oil and gas drilling Keywords: Coconut Husk, Corn Cobs, Drilling Mud, Ferric Oxide, Filtrate Loss, Fluid Loss Additive, Mud Cake Thickness, Nanoparticles DOI: 10.7176/CER/13-6-03 Publication date: October 31 st 2021

Ways to save water resources in rice systems in dry years

The article describes methods of improving the regime for saving water resources in rice systems in dry years. The greatest impact on the volume of water supply and runoff is exerted by the spring flooding of rice fields in May-June. Filtration from the canals has a great effect on the groundwater regime, rises the level of groundwater in the canal zone, causing flooding, waterlogging and salinization of territories adjacent to the canals, up to their withdrawal from the agricultural use. Filtration losses from the interfarm and on-farm networks depend on the frequency of works, the type of soil, and the degree of turbidity of the irrigation water. The study substantiates the methods of improving the regime of saving drainage and discharge runoff in rice systems in dry years. The irrigation methods remove salts from the upper soil profile layers during groundwater mineralization up to 5 g/l, and irrigation is of a desalination nature.

Characterization of structure and properties of glass fiber filter materials with different dispersant concentrations

In wet papermaking process, the dispersant concentration has great influence on the structure and properties of paper. In this work, dilute H2SO4 with a mass fraction of 20% was used as the dispersant, and the glass fiber filter materials were made under the five dispersant concentrations of 0%, 0.06%, 0.11%, 0.17% and 0.22%, respectively, and then the related structures and properties of filter materials were measured and analysed. The results showed that the filtration loss rate and drainage speed during the preparation progress increased with the increase of dispersant concentration. When the pH value of the slurry decreased from 7.78 to 2.59, the uniformity of the filter material became better and the defects reduced. With the increase of acid addition, the pore size of filter material increased gradually, but the thickness, gram weight and porosity decreased. In addition, all the prepared filter materials were hydrophilic and oleophilic. In general, the glass fiber filter materials prepared with the acid amount of 0.17% had the highest mechanical strength, and the glass fiber filter materials had the best performance when the pH value of the slurry was maintained in the range of 2.95~3.20.

Effect of silica nano particles on the rheological and HTHP filtration properties of environment friendly additive in water-based drilling fluid

Rheological and filtration properties of drilling fluid contribute a vital role in successful drilling operations. Rheological parameters such as apparent viscosity (AV), plastic viscosity (PV), yield point (YP) and gel strength of drilling fluids are very essential for hydraulic calculations and lifting of drill cuttings during the drilling operation. Control of filtration loss volume is also very important for cost effective and successful drilling operations. Therefore, the main goal of this research is to improve the rheological and filtration properties of Grewia Optiva fibre powder (GOFP) by using 30–50 nm size of silica nano particles (SNP) in water-based drilling fluid. The experimental outcomes revealed that after hot rolling of mud samples at 100 °C for 16 h, the low pressure-low temperature (LPLT) and high pressure-high temperature (HPHT) filtration loss of GOFP additives was improved, after the addition of SNP on it. The mixture of 5% GOFP + 4% SNP has reduced the LPLT and HPHT filtration loss of drilling fluid by 74.03 and 78.12%, respectively, as compared to base mud. Thus, it was concluded that after the addition of 0.4% SNP, the LPLT and HPHT filtration control ability of GOFP additive in WBM were increased by 17.6 and 15%, respectively. The rheological parameters such as AV, PV, YP and gelation of drilling fluids were also improved by the addition of GOFP + SNP mixture in the base mud. Therefore, the implementation of GOFP + SNP mixture in water-based mud showed auspicious results which reaffirm the feasibility of using them in the successful drilling operations.