Abstract
With the enlargement of production scale and the increase of survey and adjustment work, the mismatch between test requirement and test capability becomes more and more serious. In order to further control the test cost and improve the efficiency of survey and adjustment, according to the characteristics of the peripheral oil reservoirs and sections, differential management of survey and adjustment cycle and effective methods of matching injection points are actively carried out, on the basis of satisfying the development requirements and smooth operation of various indexes, solve the mismatch between test requirements and test capabilities. By analyzing the use cycle of test data under different conditions, the type of wells with extended use cycle is determined, which can effectively reduce the need of test work under the condition that the separate layer water injection is qualified. The distribution rules of different sizes of nozzles are statistically analyzed, and the selection rules of nozzles in special layers are made clear in advance to improve the debugging efficiency of injection allocation point.
Highlights
In recent years, on the premise of the decrease of drilling scale, the production is increasing year by year, and the quality of water injection is required to be improved continuously
In order to push forward the water injection work in the oilfield of "enough water injection, good water injection, fine water injection and effective water injection", it is required that the passing rate of testing in separate water injection wells should reach over 98%, and the passing rate of separate water injection should keep above 90% and run smoothly, the separate layer adjustment technique of water injection well is the main method to measure and adjust the water absorption of formation, and the main factor that affects the separate layer water injection qualified rate decides the operation of separate layer water injection qualified rate index[1]
Differential management of test cycle and improvement of debugging efficiency are the main methods to solve the problem of mismatch between test requirement and test capability
Summary
On the premise of the decrease of drilling scale, the production is increasing year by year, and the quality of water injection is required to be improved continuously. In order to push forward the water injection work in the oilfield of "enough water injection, good water injection, fine water injection and effective water injection" , it is required that the passing rate of testing in separate water injection wells should reach over 98% , and the passing rate of separate water injection should keep above 90% and run smoothly, the separate layer adjustment technique of water injection well is the main method to measure and adjust the water absorption of formation, and the main factor that affects the separate layer water injection qualified rate decides the operation of separate layer water injection qualified rate index[1]
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