CAJ | 학술논문

水力压裂裂缝形态是油层压裂设计首先要考虑的问题针对中原油田富县探区中生界油藏储层埋藏深度浅,跨度大（300～1100 m）,储层三向地应力变化大,压裂裂缝形态复杂的情况,通过对区域构造特征、岩芯地应力、岩石抗张强度、瞬时停泵压力、压裂时缝内净压力、岩石横向非均质性等综合分析,得出该区人工裂缝以水平缝为主,垂直缝及高角度斜交缝也有可能存在,而且人工裂缝在延伸过程中还可能发生转向。
수력압렬렬봉형태시유층압렬설계수선요고필적문제침대중원유전부현탐구중생계유장저층매장심도천,과도대（300～1100 m）,저층삼향지응력변화대,압렬렬봉형태복잡적정황,통과대구역구조특정、암심지응력、암석항장강도、순시정빙압력、압렬시봉내정압력、암석횡향비균질성등종합분석,득출해구인공렬봉이수평봉위주,수직봉급고각도사교봉야유가능존재,이차인공렬봉재연신과정중환가능발생전향。
The characteristic of the hydraulic fractures is the first question of fracturing design. The buried depth of Mesozoic reservoir of Fuxian block is easy,strech is wide（300- 1100 metres）,three-dimensional stress of the reservoir alters much and the characteristic of the hydraulic fractures is complex.Through comprehensive analysis on the regional tectonic characteristics,geostress,tensile strength of rock,instantaneous shut -in pressure,net pressure within seam and rock lateral heterogeneity,it is found that the hydraulic fractures are mostly horizon,vertica and high angle oblique fracture are also availability,and fracture in the extension process also can change direction.