大王北油田大52块低渗高凝油藏开发措施

. Developing measures for lowpermeability and high oilsolidificationpoint reservoir in block Da52 of Dawangbei oilfield.

大５２块是一个油层深且薄、低渗透、天然能量不足的油田，原油具有凝固点高和含蜡量高的特点。自１９９３年以来，为改善油藏的整体开发效果，先后采取了水力泵深抽工艺，柱塞泵高压注水工艺，油藏整体压裂改造工艺和油藏监测技术。通过四项配套技术的应用，提高了油井的产能，使该块的开井时率达９６％，累计生产原油３０３５７１ｔ；使该油田的平均日产油水平由６５ｔ／ｄ上升到２１２ｔ／ｄ。

Block Da52 is a reservoir with deep well, thin layers, low permeability and lack of nature energy. Its crude oil has high solidificationpoint and high wax content . In order to improve its development result, such matching technics as deep pumping by hydraulic piston pump, highpressure water injection by plunger pump, whole block fracture stimulation and reservoir monitoring have been adopted sequentially since 1993. As a result in this block, productivity of oil well has been increased and wellworking time rate reached 96%, accumulated oilincrement 303571t, average oilproduction rate raises from 65t/d to 212t/d, it provides reference model to the same type reservoir.