渤海稠油油田水平分支井钻井完井技术

渤海油田的大部分油藏为稠油油藏，地层胶结疏松，如何提高采收率、增加原油产量是稠油开发过程中面临的艰巨任务之一，而水平分支井钻井完井技术是提高稠油油藏采收率的有效途径之一。主要从水平分支井的工程设计、钻井完井的难点分析、井眼轨迹控制工艺技术以及钻井液体系、性能、现场维护等方面介绍了渤海稠油油田水平分支井的钻井完井技术，并对其经济效益进行了简要的分析。水平分支井钻井完井技术的成功应用，为渤海稠油油田的开发找到了一条新路子，并将在几个油田的开发和调整中推广应用。

Drilling and Completion Techniques for Multilateral Horizontal Wells in Bohai Thick Oil Fields

The most oilfields in Bohai Bay are characterized with thick, unconsolidated reservoirs. How to improve recovery factor and increase crude production rate is challenging to thick oil production, facing which the drilling and completion technologies are found to be one of effective methods. From the aspects such as engineering design, challenges' analyses, well trajectory control, and drilling fluid system maintenance on wellsite etc. , this article discusses drilling and completion technique for multilateral horizontal wells in Bohai thick oil fields. The economic benefits of multilateral horizontal wells are also analyzed briefly. The successful applications show a new way to develop Bohai thick oil field, which can be widely applied for development and adjustment wells.