北京一龙恒业石油工程技术有限公司成立于2005年,总部位于北京望京科技园区,是北......
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提供全方位、高质量、最专业的石油一体化服务
Pumpdown perforating
Snubbing Service
Coiled Tubing
Oil Extraction
Completion&Fracturing
Drilling technical service
Workover Treatment
Oilfield Chemical Services
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Workover operation refers to an operation of care and maintenance measures for oil drilling and subsequent well maintenance to ensure successful well use. With continuous development of oil fields, oil-well failures may occur during natural flowing, oil pumping or water injection process due to various factors and at this time, normal production can only be restored through workovers to replace downhole equipment and adjust parameters of the well. Workover process is developed with the extension of oilfield development time and the development of oil production process. Workover process was formerly a part of the oil production process and as for the need of process where the well structure may be changed, such as drilling, grinding, cementing and other processes plus some of the drilling process and parameters, so workover has developed into an independent process on the basis of drilling process and oil production. As for the project difficulty and high technical requirements demands large workover equipment with overhaul drill pipes, turntables and other special equipment, therefore, only professional process company of certain strength can be engaged in the workover.
With the applications of casing withdrawal and replacement process, shaping technique, expansion pipe making-up process, liner reinforcement process, 4 "casing reinforcement process, complete the repair and reinforcement work of casing deformation and wells with broken casings.
Fishing of rope-like fishes\Fishing of curved pumping rod\Fishing techniques of corrosion tubing……
The main technical problem of horizontal well workover are: large friction, easily lead to weight indicator distortion, tension and torque is not easy to transfer to the sticking point; due to the well string is close to the wall, a long "sand bed" section is easily to form at washover and sand flushing; in fishing, fish guidance (or fish withdrawal) is more difficult.
In the process of oil extraction, the polymer in the oil layer and solid particles and other substances carried by crude oil will, as time goes by, gradually gather near wellbore area and block oil flow path, resulting in a smaller pore and poor near-wellbore area, and thereby lower oil production, and even lead to stop production. Using the long segment gun barrel deflagration fracturing technology that is unique to Tongyuan Oil Tools, the plugging problems at near-wellbore area in old wells will be solved and production restored.