Abstract
Perforation gun and cable are stuck underground, which often occurs in cable perforation. Whether the perforation cable gets stuck properly or not will not only affect the cost of accident treatment, sometimes even affect the success or failure of a well, and sometimes delay the best time of other well layout; Therefore, the unblocking and fishing technology of perforating gun is an important part of perforating operation. The fishing operation of perforating gun sticking can be divided into two categories: one is the fishing of cable, the other is the fishing of perforating gun body. The shape of fish falls into rope and tube. The stuck fishing work must accurately grasp: well condition data, fish falling situation, fishing tool combination, fish head situation, etc. Combined with the process of accident treatment, this paper studies and analyzes the fishing technology of perforating cable and perforating gun.
Highlights
The development of society can not be separated from the support of energy
The concept of downhole falling objects in oil fields is broad, mainly referring to a variety of tangible materials falling from oil production wellhead, pipe string, logging and other devices
3.2 Retractable slip overshot: Structure of slip overshot: slip overshot is basically composed of outer barrel and internal components
Summary
The problem of falling objects in wells is a common problem that puzzles oil production. The concept of downhole falling objects in oil fields is broad, mainly referring to a variety of tangible materials falling from oil production wellhead, pipe string, logging and other devices. They can be divided into pipe well falling objects, rope well falling objects, rod well falling objects, etc. These wells must be cleaned up in time, otherwise once the oil layer is blocked, the threat to the entire oil well will be fatal. There are two main methods for cleaning the falling objects in the well. One is to destroy it in the well, but the more extensive method is to use the technique of downhole fishing
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