Development and application of on-line electric sealing tester for concentric separate layer injection wells
With the deepening of oilfield development,stratified water injection is still the main development way to supplement formation energy,achieve stable oil production and enhance oil recovery.The existing concentric stratified water injection well inspection and sealing technology has some problems,such as diffi-cult instrument positioning,easy damage of seals and low efficiency of inspection and sealing.An on-line electric sealing tester for concentric injection wells has been developed by combining design and test.It is e-quipped with a multifunctional ground control system that integrates multi-parameter testing technology such as flow rate,up/down pressure,etc.,to realize a single well and multi-layer sealing test.The test shows that the setting/unlocking performance,the setting/unsealing performance of the rubber cylinder,the bearing capacity of the whole machine and the sealing bearing capacity can meet the requirements.The field application effect is good,which solves the problem of low sealing efficiency,improves the test efficiency and pass rate of stratified water injection,and provides a reliable process technology for improving the effect of fine water injection in oil fields.
separate injection wellson-line in real timeelectricmulti-layer sealing test
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