影响河南油区调整井固井质量的因素及对策

调整井固井质量差对油田细分层开采有严重影响。在河南油区影响调整井固井质量的主要因素有注水井高压,层间压差大以及泥浆的性能等。有针对性地提高固井质量的工艺技术,可以解决调整井固井质量差的难题。现场实际施工表明:控制地层因素动态干扰、使用屏蔽暂堵技术、调整泥浆性能、优化固井设计等可以明显提高调整井固井质量。

Influence factors and countermeasure of cementing quality of adjustment wells in Henan Oil Region

The poor cementing quality of adjustment wells has serious influences on the mini-layer separation oil production of oil field. Some main factors which have influenced the cementing quality of adjustment wells in Henan Oil Region include high pressure water injection wells,large pressure differences inter-zones,and mud property,etc. Aiming at some techniques about to the cementing quality can solve some difficult problems of poor cementing quality. The actual field practice has shown that it can improve the cementing quality of adjustment wells apparently to control dynamic interferes of formation factors, to use the temporary plugged screen,to adjust the mud property, and to optimize cementing project.