The Research And Application Of Side-tracking Horizontal Well Drilling & Completion Technology Of Menggulin Block

In recent years, as oil fields entering the middle or late period, old oil fields are facing series of shortage of reserve stocks, low oil recovery, increasing drill costs and other. To achieve stable production efficiency, the side-tracking horizontal well as an efficient and effective technology is attracting more and more attention. Lots of experiments have confirmed that this technology can make a lot of abandoned wells, casing-damage wells, closed wells come back to life and increase productivity. Side-tracking horizontal well can make effective use of resources in the original wells and the ground devices, slow down water, gas coning, to improve the flooding efficiency. So that, Menggulin block uses the side-tracking horizontal well technology to exploit the remaining oil.This passage is closely based on the geological features of Menggulin block, and the static and dynamic data of reservoir. Through the analysis of remaining oil potential, the target block and the exploitation target layers are selected, and then the side-tracking horizontal targets are selected; Aiming at the specific circumstances of the target wells, the design of side-tracking horizontal wells is optimized, including the selection of side track point, well track design and structural design; It carries out research of side-tracking horizontal drilling and completion technology and support technology, Including the drilling technology and tools, drilling parameters, drilling fluid system, the selection of completion method, completion tools and completion technology, etc. The acid system is optimised by experiments, and the design of the tool using for inflate the packer is made; formed a set of acid dipping technology suitable for Menggulin block.The application of side-tracking horizontal well technology in M10-14,A200 shows that the research on side-tracking horizontal well technology has a practical significance for activating the Menggulin field closed wells and abandoned wells, and reducing the cost of the old oil field development. The technology will be one of the important means to improve oil production and stability, meanwhile it has some reference for the other similar old oil fields.