Control system and control method for the drilling speed of drill bit
A technology of a control system and a control method, which is applied to the automatic control system of drilling, the measurement of drilling, drilling equipment, etc., can solve the problems of well scrapped, well wall instability, and the drilling speed of the drill bit is not regulated in time.
Active Publication Date: 2020-11-03
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
However, this method cannot achieve real-time control, so that the drilling speed of the drill bit must be regulated in time. If the drilling speed is not properly controlled, the well wall will be unstable, the wellbore trajectory will deviate, and the drilling efficiency will be low, which will seriously lead to The well wall collapsed, making the well scrapped and causing huge economic losses
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[0050] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope. After reading the present invention, those skilled in the art will understand the present invention Modifications of various equivalent forms fall within the scope defined in the present application.
[0051] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration on...
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The invention discloses a control system and control method for the drilling speed of a drill bit. The control method comprises the steps of receiving ground engineering parameters of ground engineering equipment; receiving underground information of a target well in the drilling process of the drill bit, wherein the underground information comprises near-bit engineering parameters and environmental characteristic parameters; inputting the ground engineering parameters and the underground information into comprehensive data processing equipment, and inputting the ground engineering parametersand the underground information into an optimization model by the comprehensive data processing equipment to obtain underground decision parameters and ground decision parameters; adjusting the groundengineering equipment according to the ground decision parameters, and adjusting the ground engineering parameters into the ground decision parameters; and adjusting the drill bit according to the underground decision parameters, and adjusting the working parameters of the drill bit into the underground decision parameters. By adjusting the ground engineering parameters and the drill bit workingparameters at the same time, the drilling speed of the drill bit can be effectively controlled.
Description
technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a control system and a control method for drilling speed of a drill bit. Background technique [0002] The statements in this section only provide background information related to the present disclosure and may not constitute prior art. [0003] With the global energy shortage, oil and natural gas resources have become the energy that countries generally compete for, and all countries are stepping up oil and gas exploration and development. Drilling is one of the most critical links in the process of oil and gas exploration and development. During the drilling process, it is necessary to effectively control the ground engineering parameters that affect the drilling speed, so that the drilling speed of the drill bit can be reasonably controlled, the operation time can be effectively reduced, and the job cost. [0004] In the prior art, the downhole working condition ...
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IPC IPC(8): E21B44/04E21B45/00E21B47/00
CPCE21B44/04E21B45/00E21B47/00
Inventor 宋先知裴志君李根生黄中伟田守嶒祝兆鹏
Owner CHINA UNIV OF PETROLEUM (BEIJING)