Reservoir types and regional accumulation characteristics of pear rift

Abstract

Reservoir types and distribution of water is an important part of petroleum geology studies, selection and knowledge of the oil and gas exploration direction of hydrocarbon accumulation rules are important. The use of logging while drilling, a variety of three-dimensional seismic and geological data provided by the site.Fine reservoir anatomy purpose is known reservoir of available information on the difficult issues of reservoir development process focused on block-depth analysis, in order to achieve the same type of speculation from known reservoirs unknown obtain reservoir expansion side scrolling development direction. Pear rift located southeast uplift area of Songliao basin, faulted area of nearly 2300km2, the maximum depth of the base more meters, since the Early Cretaceous developed from broken Au stacked composite basin, the western boundary by the curved rupture (Mulberry NTU dustpan fracture) controlled rift. Today profile rift morphology can be divided into upper and lower two-tier structure, mulberry station fracture as the main control pear rift basin depression fracture control, control of the same sequence of rift formation and distribution off the east and west over the dustpan rift style. Occurrence gentle, thickness and distribution of more stable depression sequence overlying basal rift sequences and sequence. Pear rift rich oil and gas resources, it has already discovered oil and gas fields SIWUJIAZI, after five household gas field, GUJIAZI field, Taiping Oilfield, Qin jiatun oil and gas fields, gas fields and leather home Jinshan gas field 15 oil and gas fields, the cumulative reported 94,720,400 tons of proven oil reserves, the cumulative reported proven natural gas reserves of 75.819 billion square geological exploration with remarkable results. Find out the reservoir type, distribution and main controlling factor is the basis for evaluation of zone and key objectives preferred. Therefore, this chapter will have been found in oil and gas fields (reservoirs) of oil and gas distribution, a comprehensive analysis of the law of accumulation, production information, etc. based on the results, divide reservoir type, carry typical anatomical reservoirs, clear accumulation main factor. Reservoir types and distribution of water is an important part of petroleum geology studies, selection and knowledge of the oil and gas exploration direction of hydrocarbon accumulation rules are important. Songliao Basin rift pear accumulation conditions and water distribution complex, rich reservoir type. The use of logging while drilling, a variety of three-dimensional seismic and geological data provided on site for 196 wells fine anatomical reservoirs provide the basis for summary analysis of reservoir types and distribution of oil and water.