复合压裂技术在高应力地层的应用

2006年 13卷 第06期
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Application of Multiplex Fracturing Technology in High Stress Zone
( 1 吐哈石油指挥部油气合作开发公司, 新疆鄯善838202; 2 吐哈石油钻采工艺研究院, 新疆鄯善838202 )
Oil& Gas Cooperation D eve lopment
Company, Tuha O ilfield, CNPC, Shanshan 838202,
China
勒10块J2 x储层具有岩性致密、物性差、自然产能低、地应力高的特点。压裂施
工时压力较高, 成功率低, 严重影响了压裂效果。结合储层特点及前期压裂情况, 应用了满足
高应力地层改造的复合压裂技术。主要做法是: 压裂前对地层进行酸化预处理或实施高能气
体压裂, 以降低压裂时的地层破裂压力, 然后进行正式压裂施工。现场应用表明, 复合压裂的
施工成功率较高, 增产效果明显。
The J2x pay zone of B lock Le 10 is characterized by the
compacted rocks, poor bedrock, low productiv ity and h igh
stress. The pressure of fracturing is high espec ia lly. The
chance of success is uncerta in and the inc reased productiv ity
is little. Comb ined w ith the reservo ir charac ter and the ear ly
fracture, the m ultip lex fractu ring technology fitting for the
h igh stress zone is applied. Tha t is that the hydraulic
fracturing is carried out a fter acidizing or h igh energy gas
fracturing to reduce the crack ing pressure o f zone.
App lication o f mu ltiplex fractur ing techno logy on the spot
increases the successful chance and the productiv ity of the
sing le we l,l and g ets obvious econom ic profits.
勒10块; 岩性致密; 高应力地层; 复合压裂; 应用;
Block Le 10, Com pac ted ro ck, H igh stress
zone, Mu ltiplex fractur ing techno logy, App lication;