CN102562035B - Underground engineering parameter measurement-while-drilling device - Google Patents

Underground engineering parameter measurement-while-drilling device Download PDF

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Publication number
CN102562035B
CN102562035B CN201210008474.1A CN201210008474A CN102562035B CN 102562035 B CN102562035 B CN 102562035B CN 201210008474 A CN201210008474 A CN 201210008474A CN 102562035 B CN102562035 B CN 102562035B
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China
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main shaft
switch
test main
circuit plate
measuring circuit
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CN201210008474.1A
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CN102562035A (en
Inventor
李汉兴
陈平
蒋世全
黄万志
马天寿
吴光武
程载斌
李峰飞
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China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
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Southwest Petroleum University
China National Offshore Oil Corp CNOOC
CNOOC Research Institute Co Ltd
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Abstract

The present invention relates to a kind of underground engineering parameter measurement-while-drilling device, for pressure and annular pressure in measurement while drilling the pressure of the drill, moment of torsion, drill string.Comprise a test main shaft, it is fixed with resistance strain gage, measuring circuit plate and annular pressure sensor, overpressure sensor; Resistance strain gage forms multiple electric bridge and is connected with measuring circuit plate, and annular pressure sensor, overpressure sensor are communicated with corresponding Fuel Tanking Unit to be experienced oil pressure and change, and is connected with measuring circuit plate; In test main shaft, be provided with righting pipe, be placed with battery sleeve in righting pipe, along test main shaft diameter to arranging a hollow screw, a power switch, wire connects measuring circuit plate, battery sleeve and power switch, measuring circuit plate record, storage, uploading data.The present invention installs and measures parts inside and outside a test main shaft, and without autokinesis parts, directly reflect drill bit and drilling tool working condition, data are reliable, and accuracy is high.

Description

Underground engineering parameter measurement-while-drilling device
Technical field
The instrument used when the invention belongs to oil and gas well drilling, is specifically related to a kind of oil and gas well drilling underground engineering parameter measurement-while-drilling device.
Background technology
In oil and gas well drilling work, no matter be bore directional well, horizontal well, or straight well, in order to control drilling well better, ground surface works technician needs the engineering parameter better understanding down-hole---pressure and annular pressure etc. in the pressure of the drill, moment of torsion, flexural stress, drill string.
At present in domestic and international wellbore construction process, the method obtaining the underground engineering parameter such as pressure and annular pressure in the pressure of the drill, moment of torsion, flexural stress, drill string can be divided into ground (or nearly well head) indirectly directly to obtain two kinds in acquisition, down-hole, and the method wherein indirectly obtained is the most conventional because cost is low.To the measurement of the pressure of the drill with understand and mainly utilize ground weight indicator, but the data of ground survey can not the pressure of the drill on drill bit of reagentia really; To the measurement of moment of torsion, being carry out on wellhead assembly or motor shaft, is not more the action torque at drill bit place; To the engineering parameter such as annular pressure, flexural stress, ground cannot be understood especially.Along with the development of hyundai electronics measuring technique, various sensor and data processing equipment can obtain data and process from the rugged environment of down-hole.By sensor and data processing equipment close drill bit as far as possible, the measurement of pressure and annular pressure in the pressure of the drill, moment of torsion, flexural stress, drill string just can be realized.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of underground engineering parameter measurement-while-drilling device steadily can measuring pressure and annular pressure in the pressure of the drill, moment of torsion, drill string after entering well.It is after entering well, not only can record, store the pressure of the drill numerical value, and can share with downhole pulser survey data is directly transferred to ground.Ground surface works technician is made to understand and grasp the practical working situation of underground drilling tool in time.Further, this measurement mechanism structure is simple, and manufacturing cost is not high, long working life, is conducive to improving drilling technology level.
In order to achieve the above object and requirement, the present invention is by the following technical solutions: a kind of underground engineering parameter measurement-while-drilling device, belong to a part for steering tool, it is characterized in that: comprise one with the test main shaft of cavity, test main shaft is fixed with resistance strain gage, measuring circuit plate and annular pressure sensor, overpressure sensor; Described resistance strain gage has multi-disc, forms multiple electric bridge and is connected with described measuring circuit plate, and described annular pressure sensor, overpressure sensor are communicated with corresponding Fuel Tanking Unit to be experienced oil pressure and change, and is connected with described measuring circuit plate; Fuel Tanking Unit described in two all has pressure sensitive film, on the Fuel Tanking Unit corresponding to described annular pressure sensor, pressure sensitive film is exposed in the annular space tubing string outside test main shaft, on the Fuel Tanking Unit corresponding to described overpressure sensor, pressure sensitive film is exposed in the cavity of test main shaft; In the cavity of described test main shaft, be provided with righting pipe, be placed with battery sleeve in righting pipe, along described test main shaft diameter to arranging a hollow screw, wire connects described measuring circuit plate through hollow screw one end, and the other end connects described battery sleeve; Also along described test main shaft diameter to arranging a power switch, one end and described battery sleeve trigger to be connected, and the other end is connected with measuring circuit plate by wire; Described measuring circuit plate is connected with host computer.
Above-mentioned test main shaft is outer to be protected by protective housing, comprises Kazakhstan and not protects half shell and protecting sheathing, be set in the outside of test main shaft successively.
Flat in a certain section of outer rim milling of test main shaft, flat portion is fixed with resistance strain gage, measuring circuit plate and annular pressure sensor, overpressure sensor.
Above-mentioned annular pressure sensor, overpressure sensor there is an oil pressure sensing hole, be connected with Fuel Tanking Unit by oil circuit.
Aerofoil profile centralizer is supported with between above-mentioned test main shaft inwall and righting pipe; Test main shaft two ends connect top connection and lower contact, and lock its axial location by jump ring.
Usually, hollow screw, power switch are through centralizer.
Above-mentioned power switch comprises one and is fixed on the switch housing tested on main shaft, fills a switch axle, with switch housing radially setting-in in switch housing; Top milling one step of switch axle, trigger switch one end next-door neighbour's battery, the other end is positioned on step, when switch axle rotates, touches trigger switch and battery is connected.
This device is connected with mud pulse generator by Special connecting device, through mud pulse generator, measuring-signal is sent to ground.
The present invention is owing to taking above technical scheme, and it has the following advantages: 1, the present invention installs and measures parts inside and outside a test main shaft, without autokinesis parts, directly reflects drill bit and drilling tool working condition; 2, the present invention tests on main shaft and installs foil gauge, and body can transmit the pressure of the drill, the torque load that normal drilling well uses, and utilize foil gauge to form electric bridge measurement while drilling the pressure of the drill, moment of torsion, data are reliable, and accuracy is high; 3, the present invention has two pressure sensors in test main shaft mounted inside, and the outside of the test lead connective protection housing of a pressure sensor, to measure downhole annulus pressure; The test lead of another one pressure sensor is communicated with test main shaft inside, to measure the pressure of drill string inside.The change of pressure is passed to pressure sensor by the hydraulic oil of Fuel Tanking Unit by mud pressure, passing the signal along to measuring circuit plate, carrying out recording, store or being sent to uploading device through connecting wire; 4, the present invention relies on measuring circuit plate not only can record, store data, all right uploading data; 5, structure of the present invention is simple, enters reliable operation after well, long service life.
Accompanying drawing explanation
Fig. 1 is that the axis of no-feathering of apparatus of the present invention cuts open figure.
Fig. 2 is the sectional structural map of erection loop pneumatics force snesor.
Fig. 3 is the sectional structural map of mounting pipe pressure sensor.
Fig. 4 is that adhering resistance strain sheets forms multiple electric bridge, and installs the sectional structural map of hollow screw.
Fig. 5 is the sectional structural map installing power switch.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
The present invention is primarily of compositions such as test main shaft, protective housing, righting pipe, measurement processing circuit, pressure sensor, resistance strain gages; by pressure sensor, resistance strain gage that test main shaft is installed; in real time to measurement processing signal transmission circuit; understand the stress of current test main shaft, and by measurement processing circuit record, deciphering, store, upload detecting information.
Specifically, as shown in Figure 1, a certain section of outer rim milling of test main shaft 1 is flat, successively sheathed two panels breathe out not (ha] f) protect half shell 2 and a protecting sheathing 3 as protection.Because the outer side milling of test main shaft 1 is flat, so make it and breathe out not to protect between half shell 2 to leave space, in space, annular pressure sensor 4 is installed, and corresponding supporting Fuel Tanking Unit 5; Overpressure sensor 6 is also installed, and corresponding supporting Fuel Tanking Unit 7; Measuring circuit plate 8 is also installed.
As shown in Figure 1, 2, annular pressure sensor 4 is arranged in space, it has an oil pressure sensing hole 41, is connected with Fuel Tanking Unit 5 by oil circuit 42, Fuel Tanking Unit 5 is provided with pressure sensitive film 51, be exposed in annular space tubing string, when annular pressure changes, pressure sensitive film 51 changes, and drives hydraulic pressure change in Fuel Tanking Unit 5, hydraulic pressure change is delivered to annular pressure sensor 4 by oil circuit 42, records annular pressure thus.Annular pressure sensor 4 is connected with measuring circuit plate 8, will record signal transmission to measuring system.
As shown in Figure 3, the operating principle of overpressure sensor 6 and Fuel Tanking Unit 7 is with annular pressure sensor, and only the pressure sensitive film 71 of Fuel Tanking Unit 7 is exposed in the cavity of test main shaft 1, for testing overpressure.
As shown in Figure 4, the flat horizontal surface of test main shaft 1 is also pasted with several resistance strain gages 9, and several foil gauges form multiple electric bridge, are connected with measuring circuit plate 8, carry out recording, store and transmitting a signal to uploading device.
As shown in Figure 1, test main shaft 1 axle center place offers cavity, in-built righting pipe 10 and centralizer 11, and aerofoil profile centralizer 11 is supported between test main shaft 1 and righting pipe 10, plays radial damping and spacing effect; Righting pipe 10 two ends are threaded top connection 12 and lower contact 13, and lock its axial location by jump ring 14.At righting pipe 10 built with battery sleeve 15.One hollow screw 16 is through test main shaft 1 sidewall, and as the interface channel of wire, wire is through hollow screw 16, and one end connects measuring circuit plate 8, and the other end connects battery sleeve 15.If hollow screw 16 through a centralizer 11, will play the effect of axial limiting to this centralizer simultaneously.
Meanwhile, a power switch 17 is also through test main shaft 1 sidewall, and as the power-on switch of battery sleeve 15, its principle is similar to flashlight.As shown in Figure 5, power switch 17 comprises one and is radially fixed on switch housing 171 on test main shaft 1, and switch housing 171 li fills a switch axle 172, switch axle 172 and switch housing 171 radially setting-in in case switch axle 172 is deviate from.The top milling of switch axle 172 has a step, and the toggle end of trigger switch 173 is positioned on step, trigger end next-door neighbour battery.When switch axle 172 rotates, will touch toggle end when turning over step place, toggle end band moves trigger end and battery conducting.Another terminals of power switch 17 are connected with measuring circuit plate 8.If power switch 17 through a centralizer 11, will play the effect of axial limiting to this centralizer simultaneously.
During concrete enforcement, after test main shaft 1 machines, carry out the following assembly manipulation:
1) resistance strain gage 9 is pasted onto on the milling plane of test main shaft 1 outer rim, forms multiple measuring bridge, measuring circuit plate 8 is also fixed on the milling plane of test main shaft 1, utilizes wire to be connected with measuring circuit plate 8 by resistance strain gage 9;
2) in advance battery sleeve 15 is fixed to righting pipe 10 inner, battery sleeve upper conductor is reserved, and centralizer 11 is fixed to righting pipe 10 outside, then utilizes upper and lower joint shutoff righting pipe two ends, put into test main shaft 1 inner, locked the axial location of inner body by jump ring 14;
3) assemble hollow screw 16, utilize wire to be connected with measuring circuit plate 8 by battery sleeve 15;
4) assemble power switch 17, utilize wire to be connected with measuring circuit plate 8 by power switch 17;
5) erection loop pneumatics force snesor 4, overpressure sensor 6 and corresponding Fuel Tanking Unit 5,7, and each sensor is connected with measuring circuit plate 8;
6), after all assembling with upper-part, refill and join Kazakhstan and not protect half shell 2, protecting sheathing 3; Finally whole device is connected in drill string, G.I.H, namely can carries out with brill parameter measurement; Measuring circuit plate 8 is connected with host computer and can carries out data upload.
Above-described embodiment is only for illustration of the present invention, and wherein the structure, connected mode etc. of each parts all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.

Claims (8)

1. a underground engineering parameter measurement-while-drilling device, belong to a part for steering tool, it is characterized in that: comprise one with the test main shaft of cavity, a certain section of outer rim milling of described test main shaft is flat, and in the sheathed protective housing of plat mill section as protection, in the space between the plat mill section and described protective housing of described test main shaft, measuring circuit plate, annular pressure sensor, overpressure sensor and Fuel Tanking Unit are installed; The flat horizontal surface of described test main shaft is fixed with resistance strain gage, and described resistance strain gage has multi-disc, forms multiple electric bridge and is connected with described measuring circuit plate; Described annular pressure sensor, overpressure sensor are communicated with corresponding Fuel Tanking Unit to be experienced oil pressure and changes, and is connected with described measuring circuit plate; Fuel Tanking Unit described in two all has pressure sensitive film, on the Fuel Tanking Unit corresponding to described annular pressure sensor, pressure sensitive film is exposed in the annular space tubing string outside test main shaft, on the Fuel Tanking Unit corresponding to described overpressure sensor, pressure sensitive film is exposed in the cavity of test main shaft;
In the cavity of described test main shaft, be provided with righting pipe, be placed with battery sleeve in righting pipe, along described test main shaft diameter to arranging a hollow screw, wire connects described measuring circuit plate through hollow screw one end, and the other end connects described battery sleeve; Also along described test main shaft diameter to arranging a power switch, one end and described battery sleeve trigger to be connected, and the other end is connected with measuring circuit plate by wire;
Described measuring circuit plate is connected with host computer.
2. underground engineering parameter measurement-while-drilling device as claimed in claim 1, is characterized in that: described protective housing has Kazakhstan not to protect half shell and protecting sheathing, is set in the outside of test main shaft successively.
3. underground engineering parameter measurement-while-drilling device as claimed in claim 1 or 2, be is characterized in that: described annular pressure sensor, overpressure sensor have an oil pressure sensing hole, be connected by oil circuit with Fuel Tanking Unit.
4. underground engineering parameter measurement-while-drilling device as claimed in claim 1 or 2, is characterized in that: be supported with aerofoil profile centralizer between described test main shaft inwall and righting pipe; Described test main shaft two ends connect top connection and lower contact, and lock its axial location by jump ring.
5. underground engineering parameter measurement-while-drilling device as claimed in claim 4, is characterized in that: described hollow screw, power switch are through centralizer.
6. the underground engineering parameter measurement-while-drilling device as described in claim 1 or 2 or 5, is characterized in that: described power switch comprises one and is fixed on the switch housing tested on main shaft, fills a switch axle, with switch housing radially setting-in in switch housing; Top milling one step of switch axle, trigger switch one end next-door neighbour's battery, the other end is positioned on step, when switch axle rotates, touches trigger switch and battery is connected.
7. underground engineering parameter measurement-while-drilling device as claimed in claim 3, is characterized in that: described power switch comprises one and is fixed on the switch housing tested on main shaft, fills a switch axle, with switch housing radially setting-in in switch housing; Top milling one step of switch axle, trigger switch one end next-door neighbour's battery, the other end is positioned on step, when switch axle rotates, touches trigger switch and battery is connected.
8. underground engineering parameter measurement-while-drilling device as claimed in claim 4, is characterized in that: described power switch comprises one and is fixed on the switch housing tested on main shaft, fills a switch axle, with switch housing radially setting-in in switch housing; Top milling one step of switch axle, trigger switch one end next-door neighbour's battery, the other end is positioned on step, when switch axle rotates, touches trigger switch and battery is connected.
CN201210008474.1A 2012-01-12 2012-01-12 Underground engineering parameter measurement-while-drilling device Active CN102562035B (en)

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US11293275B2 (en) * 2018-05-04 2022-04-05 Schlumberger Technology Corporation Recording device for measuring downhole parameters
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No.

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Patentee after: China Offshore Oil Group Co., Ltd.

Co-patentee after: Southwest Petroleum University

Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No.

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