The Study Of Straight Well Orientation Perforation And Perforation Pressure Test Integration Technology

Now, after drilling open oil and gas stratum, mostly oil fields adopt run casingand perforatiom well completion conduct oil and gas exploration, in order toperforate casing, cement mantle and certain depth of strata and establish channelbetween well hole and target zone to test oil for production. Perforation is asignificant part in oil exploration and development, also have a strong impact onproduction capacity of oil and gas and reform measures for increasing follow-upproduction. At present, the direction of conventional perforation hole is random,which could not meet the demands for special perforation construction. Butorientation perforation technology is a new technology that could conduct directionalperforation under the well. It use TCP mode, join up an orientate sub between FiringHead and depth sub, through measure position of the orientation key on the orientatesub to confirm the position of the perforation. Although TCP orientation perforationtechnology has proved to be successful in many ways, the orientation design cannotmeet the demand of high angle deviated well. It makes perforation string difficult torotate to adjust direction for orientation。The orientation perforation technology can apply to oil wells that need fracture,realize the perforation on max principal stress. It could effectively reduce the stratumbursting pressure and ground operation pressure to increase fracturing effect. Thetechnology could become effective assistance method to avoid fault near theoperating well, link up the natural fissure of the stratum and perforation hole。Perforation pressure test integration technology is combination of perforationoperation and pressure testing tools. Once time finish the whole perforation processpressure test. And at the same time, put the pressure tools to target zone directly, the most direct, precise measurement of pressure-temperature curve; Obtain informationof pressure recovery、skin factor, calculation of production, optimization depth ofpump, evaluation positive pressure, negative pressure effect of perforation, guide nextoperation of oil and gas well。...