浅层稠油水平井不同注汽方式开采效果分析

Research on Exploitation Effect of Horizontal Wells with Different Steam Injection Patterns in Shallow Heavy Oil Reservoirs

新疆油田BZ7井区油层厚度大,含油面积大,稠油资源非常丰富,属浅层稠油油藏。对3口试验井进行了不同注汽条件下先期投产试验,然后对9个水平井和直井井组采用"面积注蒸汽"的注汽方式投产,对比分析几种不同注入蒸汽工艺方法的初期投产效果。研究表明,采用面积注蒸汽的注汽方式能够获得较高的产能,可以为类似油田水平井开发提供借鉴。

When steam is injected into horizontal wells in shallow heavy oil reservoirs,the effects are changed in different injection methods and conditions.The oil layer thickness of Well Baichong-7 is large and its oil-bearing area is great,it contains very rich heavy oil resources in shallow reservoir.Combined with the actual situation,the configuration of steam injection and production string is determined.After it is used in 3 test-wells in different steam injection conditions,9 groups of horizontal wells and vertical wells produce in ' areal steam injection ' condition.The initial productivity effects of the different steam injection methods are compared and the actual operability is analyzed.According to problems in different steam injections,some appropriate improvements are proposed.The capacity of ‘ areal steam injection ’ is thought to be relatively high based on these analyses.