Last time, we introduced several reasons for oil casing damage, namely water injection, corrosion, inclusions and perforation. Today, this article aims at the above reasons for oil casing damage and formulates relevant solutions to the problems.
The main points are as follows:
1. Preventing drilling damage to oil casing
To prevent drilling damage to casing, two key points should be noted:
(1) Oil casing with corresponding anti-corrosion performance should be selected according to the specific conditions of the bottom of the oil well;
(2) Oil personnel should optimize the drilling design plan before drilling operations, so that relevant personnel can reduce the borehole curve rate during drilling operations and reduce the stress changes of oil casing during drilling operations, thereby ensuring drilling quality and preventing damage to oil casing during drilling.
2. Optimize perforation technology to ensure cementing quality
In perforation operations, the relevant parameters of perforation operations should be optimized first to improve the accuracy of perforation technology and avoid damage to oil casing during perforation operations. Relevant managers of oil companies should strengthen supervision of the implementation of perforation technology and ensure that relevant personnel strictly follow the implementation process of perforation technology to perform perforation operations to ensure the quality of cementing and oil casing.
3. Use anti-corrosion technology to avoid damage to oil casing
Oil companies can use anti-corrosion technology to avoid damage to oil casing.
The main methods are as follows:
(1) When injecting water during oil production, some anti-corrosion additives should be added to the water to reduce damage to the oil casing.
(2) In the face of electrochemical corrosion, a certain current can be connected to the oil casing to make the oil pipe cathode and realize the transfer of casing corrosion to avoid damage to the oil casing.
Conclusion:
Good oil casing can improve the efficiency of oil production. In order to avoid damage to the machine, relevant personnel should take measures to extend the service life of the oil casing.