关键词: 机械, 采油, 弯游梁, 抽油机

Abstract: Sulige Gas Field is a low-pressure, low-porosity and low-permeability gas reservoir of stratigraphic lithological trap, for which conventional development method does no achieve satisfactory development results. The staged fracturing tools for open hole of horizontal well is developed in the light of the characteristics of Sulige Gas Field, such as rapid pressure decline and poor communications of sand bodies. As for the well based on open hole completion, open-hole packer is suspended at the designated wellbore section with sliding sleeve started by pressure and sliding sleeve by thrown ball so that staged isolation is horizontally selected in the fractured wellbore section. Staged fracturing is conducted according to the number of fractured sections. Fracturing operation for the whole section is completed by one string of pipes, thus enlarging the filtrating area, making more sand bodies communicate, and fulfilling the objective of high-efficiency development. This paper briefs about the relative systematic tools and indoor test, field application and operational application as well as the efforts for a large-scale application.

Key words: horizontal well, open hole completion, selective staged fracturing, fracturing tools