CN202991008U - Dynamometric device for simulating mechanical characteristic of bottom-hole assembly - Google Patents

Dynamometric device for simulating mechanical characteristic of bottom-hole assembly Download PDF

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Publication number
CN202991008U
CN202991008U CN 201220699012 CN201220699012U CN202991008U CN 202991008 U CN202991008 U CN 202991008U CN 201220699012 CN201220699012 CN 201220699012 CN 201220699012 U CN201220699012 U CN 201220699012U CN 202991008 U CN202991008 U CN 202991008U
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CN
China
Prior art keywords
tension
compression sensor
drill bit
flexure strip
fastening bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220699012
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Chinese (zh)
Inventor
范永涛
高德利
房军
宋执武
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China University of Petroleum Beijing CUPB
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China University of Petroleum Beijing CUPB
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Priority to CN 201220699012 priority Critical patent/CN202991008U/en
Application granted granted Critical
Publication of CN202991008U publication Critical patent/CN202991008U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a dynamometric device for simulating a mechanical characteristic of a bottom-hole assembly. The dynamometric device mainly comprises a mounting seat, a dynamometric ring, strain sheets, three elastic sheets, a simulated drill collar, a simulated drill bit, a tension-compression sensor pressure rod, fastening bolts, washers, gaskets, a fastening nut, a tension-compression sensor and a base, wherein the simulated drill collar is in threaded connection with the simulated drill bit; an axis of the simulated drill collar coincides with that of the mounting seat; the dynamometric ring is embedded into the mounting seat; the elastic sheets are mounted on an inner circle of the dynamometric ring at 120-degree intervals in a grooving manner; the strain sheets are clung to the two sides of the elastic sheets to form a bridge-type dynamometric sensor connected by half bridges; the fastening bolts fix the elastic sheets, the washers and the gaskets on the dynamometric ring to measure a lateral force of the simulated drill bit; and the tension-compression sensor pressure rod is mounted on the tension-compression sensor, and fastened by the fastening nut to measure axial pressure of the simulated drill bit. The dynamometric device can measure the axial pressure and the lateral force at the simulated drill bit, and provides a basis for improving a design of the bottom-hole assembly and raising a control level of a well track.

Description

A kind of device for measuring force for simulation Bottom Hole Assembly (BHA) mechanical characteristic
Technical field
The utility model relates to a kind of device for measuring force for simulation Bottom Hole Assembly (BHA) mechanical characteristic, belongs to tubing string kinetic test technical field.
Background technology
In oil exploration and development process, the drilling well basic link that is absolutely necessary has fund and technology-intensive feature.The drill string mechanics characteristic research is the important component part of modern drilling engineering theory and technology.Along with drilling technology to future developments such as hp-ht well, deep ﹠ ultra-deep well, special wells (comprising directional well, horizontal well, extended reach well, complex structural well, cluster well, under balance pressure drilling and casing drilling etc.), to the tubing string mechanics, particularly to researching and proposing of Bottom Hole Assembly (BHA) mechanical property higher requirement, need further to grasp the mechanism of Bottom Hole Assembly (BHA) deviation control with drilling straight well.
Domestic and international many scholars have carried out a large amount of theoretical researches to the mechanics problem of Bottom Hole Assembly (BHA), and by setting up ideal model and theoretical calculating, have obtained a lot of achievements.Such as, from nineteen fifty A.Lubinski than system, studied all sidedly the stressed and distortion of drill string in the Vertical Well, after having started the new situation of drill string mechanics research, the calculus of finite differences of energy method, W.B.Bradley and the F.J.Fischer of B.H.Walker, the bending with combined axial and lateral load method of white family happiness, the Finite Element of K.K.Millheim, the weighted residual method of Gao Deli, the prebending kinetics deviation control and fast drilling assembly kinetic model of Di Qinfeng etc. have successively occurred, but only understood and the dynamics of analyzing bottom drill string is incomplete from point of theory.development along with drilling measuring technology, utilize respectively cable transmission abroad, downhole stored, based on methods such as the ground survey of bottom drill string kinetic model and lab simulation measurements, experimental study and in-site measurement have been carried out to the down-hole bottom drill string is stressed with kinetic characteristic, obtained large development (referring to US4324297, US4445578, US4662458, US4958517), but still exist difficulty large, the shortcomings such as financial cost height, and domestic good in-site measurement BHA dynamics at present, lack advanced ground and underground survey system, therefore, present stage is necessary further to carry out the lab simulation research of Bottom Hole Assembly (BHA) mechanical characteristic.
The utility model content
The purpose of this utility model is, in order to overcome above-mentioned already present technical problem and deficiency, further improves the research level of laboratory experiment simulation Bottom Hole Assembly (BHA) mechanical property, and the spy provides a kind of device for measuring force for simulation Bottom Hole Assembly (BHA) mechanical characteristic.
The utility model realizes that the technical scheme that its purpose adopts is: a kind of device for measuring force for simulation Bottom Hole Assembly (BHA) mechanical characteristic mainly is made of mount pad 1, proving ring 2, foil gauge 3, flexure strip 4, simulation drill collar 5, simulation drill bit 6, tension-compression sensor depression bar 7, flexure strip fastening bolt 8, flexure strip fastening bolt packing ring 9, flexure strip pad 10, tension-compression sensor depression bar fastening bolt 11, tension-compression sensor 12, base 13, proving ring fastening bolt 14, tension-compression sensor fastening bolt 15.Simulation drill collar 5 is threaded with simulation drill bit 6, the dead in line of its axis and mount pad 1; Proving ring 2 embeds mount pad 1, cut the cutter groove of 3 alternate 120 ° on proving ring 2 inner circles flexure strip 4 is installed, flexure strip 4 is fixed on proving ring 2 by flexure strip fastening bolt 8, the diameter of a circle that 3 flexure strips 4 surround equals to simulate the diameter of drill bit 6, contacts under original state with simulation drill bit 6 to guarantee 3 flexure strips 4; Thickness by changing flexure strip 4 can measure analog drill bit 6 different lateral forces, and the flexure strip pad 10 of selecting suitable thickness equals to simulate the diameter of drill bit 6 with the inscribe diameter of a circle that guarantees 3 flexure strips 4 and surround, and the alternate 180 ° of distributions of proving ring fastening bolt 14 are with fixing proving ring 2; Preferably, foil gauge 3 is attached to the two sides of flexure strip 4 to consist of the strain-type force sensor of half-bridge connection; Preferably, tension-compression sensor depression bar 7 is arranged on tension-compression sensor 12, the top contact axial compression with measure analog drill bit 6 with the top of simulation drill bit 6, and tension-compression sensor depression bar fastening bolt 11 tightens up the gap of tension-compression sensor depression bar 7 to be threaded between elimination tension-compression sensor depression bar 7 and tension-compression sensor 12; The axial displacement of base 13 constraint tension-compression sensors 12; The alternate 180 ° of distributions of tension-compression sensor fastening bolt 15 are with the lateral displacement of constraint tension-compression sensor 12.
The utility model compared with prior art has following beneficial effect: (1) can be continuously dynamically, axial compression and the lateral force of measure analog drill bit accurately; (2) simple in structure, easy to make, and easily measure simulation drill bit and the different lateral force of magnitude range thereof of different-diameter.Therefore, the mechanical characteristic that closes for desk research simulation bottom drill tool provides effective survey data, has further improved the research level of Bottom Hole Assembly (BHA) mechanical characteristic.
Description of drawings
Fig. 1 is for being used for the device for measuring force assembling drawing of simulation Bottom Hole Assembly (BHA) mechanical characteristic.
Fig. 2 is that the A of Fig. 1 is to sectional drawing.
Fig. 3 is that the B of Fig. 1 is to sectional drawing.
Fig. 4 a is for the flexure strip of the device for measuring force of simulation Bottom Hole Assembly (BHA) mechanical characteristic and the front view of foil gauge assembling drawing.
Fig. 4 b is for the flexure strip of the device for measuring force of simulation Bottom Hole Assembly (BHA) mechanical characteristic and the top view of foil gauge assembling drawing.
Fig. 5 is for being used for the flow chart of measure analog bit side force and axial compression.
In figure: 1. mount pad, 2. proving ring, 3. foil gauge, 4. flexure strip, 5. simulation drill collar, 6. simulation drill bit, 7. tension-compression sensor depression bar, 8. flexure strip fastening bolt, 9. flexure strip fastening bolt packing ring, 10. flexure strip pad, 11. tension-compression sensor depression bar fastening bolts, 12. tension-compression sensors, 13. bases, 14. proving ring fastening bolts, 15. tension-compression sensor fastening bolts.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, shown in Figure 3, the utility model is a kind of device for measuring force for simulation Bottom Hole Assembly (BHA) mechanical characteristic, mainly consisted of wherein flexure strip 4 processing of use spring steel and making by mount pad 1, proving ring 2, foil gauge 3, flexure strip 4, tension-compression sensor depression bar 7, flexure strip fastening bolt 8, flexure strip fastening bolt packing ring 9, flexure strip pad 10, tension-compression sensor depression bar fastening bolt 11, tension-compression sensor 12, base 13, proving ring fastening bolt 14, tension-compression sensor fastening bolt 15.
The installation annexation of each building block is: simulation drill collar 5 is threaded with simulation drill bit 6 and forms the simulation Bottom Hole Assembly (BHA), it is connected with drive unit away from drill bit, the simulation drill bit 6 of nearly drill bit is arranged in device for measuring force, and the mount pad 1 of device for measuring force is fixed by clamp; Proving ring 2 embeds mount pad 1, cuts the cutter groove of 3 alternate 120 ° on proving ring 2 inner circles flexure strip 4 is installed; As shown in Fig. 4 a, Fig. 4 b, foil gauge 3 is attached to the two sides of flexure strip 4 to consist of the strain-type force sensor of half-bridge connection; Flexure strip 4 is fixed on proving ring 2 by flexure strip fastening bolt 8, the inscribe diameter of a circle that 3 flexure strips 4 surround equals to simulate the diameter of drill bit 6, to guarantee that 3 flexure strips 4 contact under original state with simulation drill bit 6, consist of the lateral force sensors of the lateral force of measure analog drill bit 6; Thickness by changing flexure strip 4 can measure analog drill bit 6 different lateral forces, and the flexure strip pad 10 of selecting suitable thickness equals to simulate the diameter of drill bit 6 with the inscribe diameter of a circle that guarantees 3 flexure strips 4 and surround; The alternate 180 ° of distributions of proving ring fastening bolt 14 are with fixing proving ring 2.
Tension-compression sensor 12 is demarcated when dispatching from the factory for the LC1102 type strain gauge drawing force and compression force transducer that Beijing peace enlightening century Electronics Co., Ltd. produces; Tension-compression sensor depression bar 7 is arranged on tension-compression sensor 12, the top contact axial compression with measure analog drill bit 6 with the top of simulation drill bit 6, and tension-compression sensor depression bar fastening bolt 11 tightens up the gap of tension-compression sensor depression bar 7 to be threaded between elimination tension-compression sensor depression bar 7 and tension-compression sensor 12.
The axial displacement of base 13 constraint tension-compression sensors 12; The alternate 180 ° of distributions of tension-compression sensor fastening bolt 15 are with the lateral displacement of constraint tension-compression sensor 12.
The course of work of the present utility model is: foil gauge 3 is attached to the tow sides of flexure strip 4, then 120 °, 3 same flexure strips 4 interval is fixed on proving ring 2 by flexure strip fastening bolt 8, consist of lateral force sensors; As shown in Figure 5, before using, lateral force sensors is demarcated, obtain the corresponding relation of power and strain; Lateral force sensors and tension-compression sensor 12 are arranged on mount pad 1 and by the clamp on testing counter fix; By signal cable, lateral force sensors, tension-compression sensor 12 and signal acquisition module, computer are linked together; With simulation wellbore hole, simulation drill string clamping on testing counter; Loading system by testing counter loads certain rotating speed and axial compression for the simulation drill string; At this moment signal acquisition module is according to the frequency acquisition collection signal of having established, and is stored in computer, reads the data that recorded after to be tested completing, and then carries out data according to nominal data and transforms, and obtains axial force and the lateral force of drill bit.
The utility model can be measured axial compression and the lateral force of simulation drill bit place's dynamic change when the rotation of simulation Bottom Hole Assembly (BHA), improve the research level of Bottom Hole Assembly (BHA) mechanical property, further improve the control level of Bottom Hole Assembly (BHA) design and raising well track, thereby reduce the number of times that makes a trip, shorten drilling period, reduce drilling cost.

Claims (3)

1. device for measuring force that is used for simulation Bottom Hole Assembly (BHA) mechanical characteristic, mainly by mount pad (1), proving ring (2), foil gauge (3), flexure strip (4), simulation drill collar (5), simulation drill bit (6), tension-compression sensor depression bar (7), flexure strip fastening bolt (8), flexure strip fastening bolt packing ring (9), flexure strip pad (10), tension-compression sensor depression bar fastening bolt (11), tension-compression sensor (12), base (13), proving ring fastening bolt (14), tension-compression sensor fastening bolt (15) consists of, it is characterized in that: simulation drill collar (5) is threaded with simulation drill bit (6), the dead in line of its axis and mount pad (1), proving ring (2) embeds mount pad (1), cut the cutter groove of 3 alternate 120 ° on proving ring (2) inner circle flexure strip (4) is installed, flexure strip (4) is fixed on proving ring (2) by flexure strip fastening bolt (8), the inscribe diameter of a circle that 3 flexure strips (4) surround equals to simulate the diameter of drill bit (6), contacts under original state with simulation drill bit (6) to guarantee 3 flexure strips (4), thickness by changing flexure strip (4) can measure analog drill bit (6) different lateral forces, and the flexure strip pad (10) of selecting suitable thickness equals to simulate the diameter of drill bit (6) to guarantee diameter of a circle that 3 flexure strips (4) surround, the alternate 180 ° of distributions of proving ring fastening bolt (14) are with fixing proving ring (2).
2. device for measuring force as claimed in claim 1 is characterized in that: foil gauge (3) is attached to the strain-type force sensor that the two sides of flexure strip (4) connects to consist of half-bridge.
3. device for measuring force as claimed in claim 1, it is characterized in that: tension-compression sensor depression bar (7) is arranged on tension-compression sensor (12), the top contact axial compression with measure analog drill bit (6) with the top of simulation drill bit (6), and tension-compression sensor depression bar fastening bolt (11) tightens up the gap of tension-compression sensor depression bar (7) to be threaded between elimination tension-compression sensor depression bar (7) and tension-compression sensor (12); The axial displacement of base (13) constraint tension-compression sensor (12); The alternate 180 ° of distributions of tension-compression sensor fastening bolt (15) are with the lateral displacement of constraint tension-compression sensor (12).
CN 201220699012 2012-12-18 2012-12-18 Dynamometric device for simulating mechanical characteristic of bottom-hole assembly Expired - Fee Related CN202991008U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220699012 CN202991008U (en) 2012-12-18 2012-12-18 Dynamometric device for simulating mechanical characteristic of bottom-hole assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220699012 CN202991008U (en) 2012-12-18 2012-12-18 Dynamometric device for simulating mechanical characteristic of bottom-hole assembly

Publications (1)

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CN202991008U true CN202991008U (en) 2013-06-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696757A (en) * 2014-01-03 2014-04-02 中国石油大学(北京) Device for measuring lateral force and axial force of drill bit during simulated drilling
CN107060745A (en) * 2017-04-20 2017-08-18 中国石油大学(北京) Simulate the experimental provision of compact reservoir horizontal cementing defect inducing casing deformation
CN109489945A (en) * 2018-09-20 2019-03-19 中国石油天然气集团有限公司 A kind of rotary steerable tool ground test device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696757A (en) * 2014-01-03 2014-04-02 中国石油大学(北京) Device for measuring lateral force and axial force of drill bit during simulated drilling
CN103696757B (en) * 2014-01-03 2017-03-29 中国石油大学(北京) The device of bit side force and axial force in a kind of drilling well for measure analog
CN107060745A (en) * 2017-04-20 2017-08-18 中国石油大学(北京) Simulate the experimental provision of compact reservoir horizontal cementing defect inducing casing deformation
CN109489945A (en) * 2018-09-20 2019-03-19 中国石油天然气集团有限公司 A kind of rotary steerable tool ground test device

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130612

Termination date: 20141218

EXPY Termination of patent right or utility model