CN2654855Y

CN2654855Y - Intelligent controller for petroleum drilling machine

Info

Publication number: CN2654855Y
Application number: CN 03262798
Authority: CN
Inventors: 杨恩峰; 郑芸哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-04
Filing date: 2003-09-04
Publication date: 2004-11-10
Anticipated expiration: 2013-09-04

Abstract

The utility model relates to an intelligent control device of oil drilling rig, comprising a load sensor (1) arranged on the fixed end of winch rope used for measuring the size of the main hook of the traveling block and the drilling pressure of the drilling tool, the load sensor (1) is connected with a controller (7), which is connected with a control valve (8) at the same time; the controller can calculate and process the detected load signal V2, the rate signal V- [3] given by control valve (8) and the reference signal of drilling pressure V4 set by the controller (7) and then output a control signal V5 to control the actuator (5) passing through the signal transducer (6) and realize the purpose of controlling braking force of the winch (4). The utility model can realize the purpose of controlling the travelling system of oil drilling rig with uniform speed, lowering with constant speed and bit feeding with constant pressure during the drilling process. The control process can be realized to use the controller make the lowering speed of the main hook of the traveling block on the oil drilling rig and the drilling pressure of the underground drilling head accurately operated according to the prospective law without the direct participation of personnel, the utility model has the advantages of relieving fatigue of the operator, improving the drilling quality, enhancing the well drilling safety and automatic control level of the drilling machine.

Description

The oil-well rig intelligence controlling device

Technical field

The utility model relates to oil-well rig control technology field, and a kind of specifically control by the pair twist vehicle speed can realize that constant speed and constant voltage send the oil-well rig intelligence controlling device of brill.

Technical background

The traveling system of general oil-well rig all is to handle the winch brake lever by the driller lowering velocity of hook block and the pressure of the drill of downhole drill bit are controlled, and driller's work is very arduous, and working environment is very abominable.

Summary of the invention

The utility model purpose is a kind of intelligence controlling device that is installed on the oil-well rig of design, to realize that the driller is to the move about far distance controlled and the arbitrarily control of lowering velocity and downhole drill bit the pressure of the drill of system of oil-well rig.Reach that the driller is operated is free and relaxed, alleviate driller's labour intensity, improve driller's working environment, improve the work safety and the personal safety of rig, and improve the automatic control level of oil-well rig simultaneously.

Specifically, a kind of oil-well rig intelligence controlling device, it has the load transducer (1) that is used to measure hook block and drilling tool the pressure of the drill size that is installed on the winch rope fixed end, this load transducer (1) links to each other with controller (7), described controller (7) links to each other with control valve (8) simultaneously, and controller is with detected load signal V ₂And the set speed signal V that provides of control valve (8) ₃, the pressure of the drill reference signal V4 that reaches controller (7) setting carries out exporting a control signal V5 after the computing, goes to control executing agency (5) by signal adapter (6) again, realizes the brake weight size of control winch (4).

The sender unit (3) that detects the winch tach signal also is housed on winch drum (4), and this sender unit (3) is with detected winch drum tach signal V ₁Be input in the controller (7).

This oil-well rig intelligence control system has the following advantages:

1, by controller with the rate signal of gather and rate signal and the pressure of the drill signal of load signal and setting, carry out control signal of output after the computing by computer, the variable signal that is converted into mechanical force by signal adapter, controlling organization is controlled the size of winch brake power again.In the process of making a trip, can realize hook block at the uniform velocity, constant speed transfers, and can realize the constant voltage automatic bit feed of downhole weight on bit in drilling process.

2, the lowering velocity of hook is at the uniform velocity transferred according to the speed that the driller sets; The pressure of the drill evenly send brill according to the numerical value that the driller sets, the pressure of the drill precise control, and it is little to fluctuate, and the process of feeding does not have impact.

3, safety, reliable.The uphill process and the process of transferring are controlled by last anti-collision height and following anti-collision height respectively, uphill process can not hit overhead traveling crane, transfer process and can not pound rotating disk, when the speed of transferring surpasses maximum setting speed, automatically perform snub, and transfer when highly arriving a certain setting height system's startup soft landing function automatically when hook block, hook is at the uniform velocity slowly transferred, when hook block arrived rotating disk, speed was kept to zero gradually, has guaranteed the safety of oil-well rig.In drilling process, change suddenly as down-hole formation hardness, can prevent that drill string from hurtling down, avoid big and heavy stone to bore and drilling string not well braked; As emergency, can guarantee that winch can be in " it is dead to stop " state.

Description of drawings

Fig. 1 is the utility model controller principle figure

Fig. 2 is the utility model structure principle chart.

The specific embodiment

A kind of oil-well rig intelligence controlling device, it has the load transducer (1) that is used to measure hook block and drilling tool the pressure of the drill size that is installed on the winch rope fixed end, this load transducer (1) links to each other with controller (7), described controller (7) links to each other with control valve (8) simultaneously, and controller is with detected load signal V ₂And the set speed signal V that provides of control valve (8) ₃, the pressure of the drill reference signal V4 that reaches controller (7) setting carries out exporting a control signal V5 after the computing, goes to control executing agency (5) by signal adapter (6) again, realizes the brake weight size of control winch (4).The sender unit (3) that detects the winch tach signal also is housed on winch drum (4), and this sender unit (3) is with detected winch drum tach signal V ₁Be input in the controller (7).Controller (part among Fig. 1 beyond the frame of broken lines) mainly is made of comparing unit, detection, conversion, feedback unit etc., as shown in Figure 1.This system compares through conversion rate signal and the pressure signal that records by detecting element as the setting value of actual value and operating grip or the set-point of artificial input, draw control signal and drive executing agency's work, the controllable silicon that produces rational start pulse signal control major loop carries out variable voltage control, reaches the purpose of control.

The operating principle of this intelligence control system: the oil-well rig intelligence control system is made up of load transducer 1, sender unit 3, signal adapter 6, controller 7, control valve 8 etc.Control principle figure is as described in Figure 1: be contained in the tach signal V1 that sender unit 3 on the winch drum shaft detects winch drums 4, be contained in the load transducer 1 test load signal V2 of traveling system dead line end, control valve handle 8 provides set speed signal V3, controller 7 is set the pressure of the drill reference signal V4, and controller 7 detects four kinds of signals constantly.If in the process of making a trip, controller 7 couples of V1, V2, three kinds of signals of V3 carry out computing, if in sending the brill process, V1, V2, three kinds of signals of V4 are carried out computing, export a kind of control signal V5, go to control executing agency 5 by signal adapter 6 again, realize the brake weight size of control winch 4, thus the lowering velocity of control hook block and drilling tool 2.The process of the adjusting drum speed of this automatic stepless, thus realized in the process of making a trip, keep the lowering velocity of hook block to carry out " at the uniform velocity transferring "; In sending the brill process, keep " constant voltage is sent brill " of down-hole equipment.

Claims

1, a kind of oil-well rig intelligence controlling device, it is characterized in that having the load transducer (1) that is used to measure hook block and drilling tool the pressure of the drill size that is installed on the winch rope fixed end, this load transducer (1) links to each other with controller (7), described controller (7) links to each other with control valve (8) simultaneously, and controller is with detected load signal V ₂And the set speed signal V that provides of control valve (8) ₃, the pressure of the drill reference signal V4 that reaches controller (7) setting carries out exporting a control signal V5 after the computing, goes to control executing agency (5) by signal adapter (6) again, realizes the brake weight size of control winch (4).

2, oil-well rig intelligence controlling device according to claim 1 is characterized in that the sender unit (3) that detects the winch tach signal also is housed on winch drum (4), and this sender unit (3) is with detected winch drum tach signal V ₁Be input in the controller (7).