A New Method of Preventing Sticking Accidents and Underpressure in Petroleum and Non-oil Drilling Wells
A non-petroleum, new method technology, applied in the field of prevention of sticking accidents and back pressure phenomena, can solve the problems of high cost of drilling fluid, back pressure, sticking accidents, etc.
Active Publication Date: 2021-04-27
王文超
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Problems solved by technology
[0004] The present invention aims to provide a new method for preventing sticking accidents and back pressure phenomena, so as to solve the following problems in the prior art: 1. The problems of oil and non-oil sticking accidents and back pressure phenomena; Non-oil drilling (safety and efficiency) and high cost of drilling fluid
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[0017]The technical solutions in the embodiments of the present invention will be described in detail in connection with the embodiment of the present invention, and it is to be explained that in the case of an unlipped, the features and embodiments in the present application can be combined with each other. The present invention will be described in connection with the examples.
[0018]As in the context of the background, there is no problem in reducing friction coefficients in the process of drilling construction, and there is no problem that the role of anti-stick card is actually played in drilling construction. In order to solve this problem, in a typical embodiment of the present invention, a new method of prevention of a viscous card accident and a pressure phenomenon includes the following steps:
[0019]S1, increasing the low pressure air package of the pump, reducing the vibration amplitude of the drill;
[0020]S2, high pressure air packet working pressure varies with pump pressu...
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The invention provides a new method for preventing oil and non-oil drilling sticking accidents and underpressure phenomena. The drilling method includes the following steps: S1 increasing the low-pressure air bag of the pump to reduce the vibration amplitude of the drilling tool; S2 the working pressure of the high-pressure air bag is 1 / 3 of the working pressure of the pump and is dynamic, as the working pressure changes; Add a shock absorber to the S3 drilling tool; S4 controls the lowering speed to < 10m / min (according to the operating regulations to hang the water brake), so as to prevent the large rope from vibrating violently and causing the drilling tool to vibrate violently. The appearance of the wrap angle (contact angle) is controlled through the steps of the above method, and the occurrence of sticking accidents in oil and non-oil drilling wells and the appearance of back pressure phenomenon are prevented.
Description
Technical field[0001]The present invention relates to the field of petroleum and non-petroleum drilling, and in particular, there is a new method for preventing a viscous card accident and a phenomenon.Background technique[0002]At present, the main method of anti-stick card is to reduce the friction coefficient, take measures: First, mix the oil in the drilling fluid; Second, add a surfactant in the drilling fluid, so that the surface of the drill surface is wetted to reverse the surface of the hydroproside, The purpose of reducing the friction coefficient is achieved; the third is to add solid powder, plastic ball, and glass microbeads (they are like balls), and the sliding friction is rolling friction, thereby large The magnitude reduces torque and friction. According to the US "Petroleum Abstract" records, after abroad, the viscous card accidents have occurred after the oil-based drilling drilling fluid, oil-based drilling wells. The domestic sticky card accident is also very fre...
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IPC IPC(8): E21B7/00E21B17/07E21B21/00
CPCE21B7/00E21B17/07E21B21/00
Inventor 王文超王呈呈
Owner 王文超