发明名称 HYDRAULIC FRACTURE INITIATION AND PROPAGATION CONTROL IN UNCONSOLIDATED AND WEAKLY CEMENTED SEDIMENTS
摘要 <p>A method and apparatus for initiating and propagating a vertical hydraulic fracture in unconsolidated and weakly cemented sediments from a single bore hole to control the fracture initiation plane and propagation of the hydraulic fracture, enabling greater yield and recovery of petroleum fluids from the formation. An injection casing with multiple fracture initiation sections is inserted and grouted into a bore hole. A fracture fluid carrying a proppant is injected into the injection casing and opens the fracture initiation sections to dilate the formation in a direction orthogonal to the required fracture azimuth plane. Propagation of the fracture is controlled by limiting the fracture fluid injection rate during fracture initiation and propagation and maintaining a minimum fracture fluid viscosity. The injection casing initiation section remains open after fracturing providing direct hydraulic connection between the production well bore, the permeable proppant filled fracture and the formation.</p>
申请公布号 WO2007112175(A2) 申请公布日期 2007.10.04
申请号 WO2007US63066 申请日期 2007.03.01
申请人 GEOSIERRA LLC;HOCKING, GRANT 发明人 HOCKING, GRANT
分类号 E21B49/00;E21B43/04;E21B43/267;E21B47/00 主分类号 E21B49/00
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