Layered testing and adjustment process for injection well

Abstract

A layered testing and adjustment process for an injection well mainly solves the problems that an existing testing and adjustment process is carried out separately under a well shutin circumstance, the number of devices and tools is large, and long time is consumed. The specific testing and adjustment process includes the following steps that firstly, according to an existing throwing and fishing method, blanking plugs in eccentric water distributors in various layers are fished out and then blockage type flowmeters are thrown into the eccentric water distributors in the layers; secondly, different types of injection pressure are adjusted at the mouth of the well, the injection allocation flow of the whole well is 0-150%, and three to six points are selected for pressure adjustment; thirdly, the blockage type flowmeters in the layers are fished out, and testing data are obtained; fourthly, packer seal examining is implemented; fifthly, layered flow adjustment is implemented; sixthly, layered well testing and pressure measurement are implemented. The layered testing and adjustment process for the injection well has the advantages that under a well non-shutin circumstance, layered pressure measurement is completed at the same time, the number of devices and tools is small, operators have no special skill requirements or testing and adjustment experience, and data can be synchronized.

Description

Technical field: [0001] The invention relates to a testing technique for water injection wells, polymer injection wells and gas injection wells in the field of oil production in oil fields, in particular to a layered testing and deployment technique for injection wells. Background technique: [0002] In the field of oil production, the downhole flow and pressure of water injection wells, polymer injection wells and gas injection wells are very important. In order to understand the water absorption capacity of the water injection zone, formulate and implement a reasonable layered water distribution plan, check whether the seal of the packer is intact, and perform layered pressure test well interpretation, it is necessary to conduct downhole analysis of water injection wells, polymer injection wells, and gas injection wells. Pressure and flow are tested and adjusted, and the testing workload is very heavy. The existing testing and deployment processes are carried out separate...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that in the existing testing and deployment process, the layered pressure test, layered flow rate adjustment, and packer sealing inspection need to be carried out separately. There are many equipment and tools, and the requirements for operators are high, and the operation is complicated. Layered well testing The need to shut down the well and measure the pressure takes a long time

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