A construction method for an open-hole completion string that is easy to drill and grind

Abstract

The invention discloses an easy-to-drill and grind open-hole well completion pipe string construction method, which comprises the following steps: designing an easy-to-drill and grind well completion pipe string running scheme; Well pipe string: according to the size specification of the completion pipe string that is easy to drill and grind, run the simulated well drilling tool to the bottom of the artificial well, and conduct well drilling in the whole well section; pull out the simulated well drilling tool, carry out construction according to the actual situation, and lower the combination There are two types of completion strings or easy drilling and grinding completion strings; the special easy-drilling and throwing device for running in, and the special easy-drilling and throwing device is at the top of all strings; connected with the upper drilling tool, the easy-drilling and grinding open-hole completion The well pipe string is sent into the predetermined well position; after the pipe string is in place, the hand-off operation is carried out, and whether the hand-off operation is successful is judged; the drilling is pulled out, and the remaining part of the special hand-off device is pulled out for inspection, and the construction operation is completed. The invention can solve the technical problems such as sticking, tripping, surface damage, resistance in running, breakage, and difficulty in judging if the existing open-hole well completion pipe string is easy to drill and grind in the running process.

Description

technical field [0001] The invention relates to the technical field of well completion engineering, in particular to an easy drilling and grinding open hole completion pipe string construction method. Background technique [0002] Carbonate oil and gas reservoirs in my country are widely distributed and have great potential for exploration and development. Carbonate reservoirs are generally completed with open holes. When working in carbonate rock, the formation well wall is prone to instability due to the characteristics of the rock formation itself, which will cause sand production and open collapse on the well wall. [0003] At present, in the completion operations of carbonate reservoirs, it is generally used to run sand control completion strings (usually screens or slotted pipes) to the artificial well bottom to cover the entire open hole section. Block large-grained formation sand, accumulate on the wellbore wall and the annulus of the sand control string to form a s...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides an easy-to-drill and grind open-hole completion pipe string construction method, which can solve the problems of sticking, tripping, surface damage, running-in failure, etc. Technical problems such as entry resistance, breakage, and difficulty in judging lost hands