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新22-1H井是中石化西南油气分公司部署在四川盆地川西坳陷新场构造七郎庙高点的一口深水平开发井。该井设计完钻垂深3 855 m、斜深4 892 m;实际完钻垂深3 838.17 m、斜深4 411.14 m。该井三开水平段钻至井深4 312.64 m(须四),钻遇断层及断层附近的裂缝带,发生失返性井漏,采取高酸溶性堵漏浆堵漏,再后续钻进中发生卡钻等一系列复杂情况,专家团就此展开分析讨论,并提出解决复杂井况的技术思路。现场应用证明,通过在裂缝带钻进过程中反复承压堵漏,和降低压差,同时维护钻井液,使其具有较强的抑制防塌能力,较好的失水造壁性和较强的润滑性,能有效的解决该井的复杂情况,确保了本井能顺利完钻。
The new well 22-1H is a deep horizontal development well deployed by Sinopec Southwest Oil and Gas Company to construct the Qilangmiao high point in the new field in the western Sichuan depression of Sichuan Basin. The well was drilled with a vertical depth of 3 855 m and a depth of 4 892 m. The actual drilling depth was 3 838.17 m and the depth of dip was 4 411.14 m. The well drilled to a depth of 4 312.64 m (to be drilled) at a depth of 4 312.64 m (to be drilled), drilled a fracture zone near the fault and the fault, and lost circulation was lost. A high acid-soluble plugging plugging plugging occurred and drilling occurred again Card drill and a series of complex situations, the expert group to start an analysis and discussion, and put forward technical solutions to complex well conditions. The field application proves that through the repeated bearing and plugging of pressure during the drilling process of the fractured zone and the lowering of the pressure difference, the drilling fluid is maintained at the same time so that it has a strong ability of inhibiting collapse and collapse, Of the lubricity, can effectively solve the complex situation of the well to ensure that the well can be successfully completed drilling.