CN113931612B - Stress data test acquisition system and method suitable for local wall stress relief - Google Patents
Stress data test acquisition system and method suitable for local wall stress relief Download PDFInfo
- Publication number
- CN113931612B CN113931612B CN202111150128.2A CN202111150128A CN113931612B CN 113931612 B CN113931612 B CN 113931612B CN 202111150128 A CN202111150128 A CN 202111150128A CN 113931612 B CN113931612 B CN 113931612B
- Authority
- CN
- China
- Prior art keywords
- stress
- probe
- data
- strain gauge
- strain
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 86
- 238000005070 sampling Methods 0.000 claims abstract description 34
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 230000001788 irregular Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010070 extrusion (rubber) Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Remote Sensing (AREA)
- Soil Sciences (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
技术领域technical field
本发明属于岩土力学现场测量装备技术领域,更具体地,涉及一种适用于局部壁面应力解除的应力数据测试采集系统及方法。The invention belongs to the technical field of on-site measurement equipment for rock and soil mechanics, and more specifically relates to a stress data test collection system and method suitable for local wall stress relief.
背景技术Background technique
局部壁面应力解除法是一种新的应力解除方法,通过解除钻井井壁处足够多数量的岩芯,记录此过程中不同方向的正应变变化,就能反算得到远场地应力。相比与水压致裂法和传统应力解除法,局部壁面应力解除法原理上不需要对地应力场进行假设,并且岩芯解除长度小、测试时间短、测试成功率高,理论上可以运用于任意深度。以局部壁面应力解除法原理为基础的地应力测试机器人已经成功在国家多个重大工程中得到应用,取得了较准确的成果。现有的适用于局部壁面应力解除法的应力探测设备,采用胶水将应变片粘贴在采样段,解除采样段岩芯应力,通过记录应变片应变数据变化测试出地应力。但其存在以下缺陷:(1)不能直接进行连续采样:面对不同采样段需要将应变片重新粘贴,费时费力;(2)不适用于深部钻井复杂条件:在面对深部钻井复杂条件时,存在设备防水性能不足、不能在钻井液存在的条件下直接测试等方面的弱点;(3)应变片易损坏:高精度应变片作为一种精密电子元器件,在重复粘贴后取下的过程中易出现机械系损伤,特别在钻井中石油时极易被钻井液中存在的岩屑以及不规则孔壁所破坏;(4)应变片难以在钻井复杂条件下粘贴在井壁表面,其采用成功率低。(5)应变片存在温度漂移,在钻井的高温条件下,其应变测量数值失真。The local wall stress relief method is a new stress relief method. By releasing a sufficient number of cores at the drilling wall and recording the normal strain changes in different directions during the process, the far field stress can be obtained by back calculation. Compared with the hydraulic fracturing method and the traditional stress relief method, the local wall stress relief method does not need to assume the in-situ stress field in principle, and the length of the core relief is small, the test time is short, and the test success rate is high. Theoretically, it can be used at any depth. The ground stress test robot based on the principle of local wall stress relief method has been successfully applied in many major national projects and achieved relatively accurate results. The existing stress detection equipment applicable to the local wall stress relief method uses glue to paste the strain gauges on the sampling section, releases the core stress in the sampling section, and tests the ground stress by recording the strain data changes of the strain gauges. However, it has the following defects: (1) Continuous sampling cannot be directly performed: the strain gauges need to be pasted again in the face of different sampling sections, which is time-consuming and laborious; (2) It is not suitable for complex conditions of deep drilling: when faced with complex conditions of deep drilling, There are weaknesses in the waterproof performance of the equipment and the inability to directly test in the presence of drilling fluid; (3) The strain gauge is easily damaged: as a precision electronic component, the high-precision strain gauge is used in the process of being removed after repeated pasting. It is prone to mechanical system damage, especially when drilling oil, it is very easy to be damaged by cuttings in the drilling fluid and irregular hole walls; (4) It is difficult for the strain gauge to be pasted on the surface of the well wall under complex drilling conditions, and the success rate of its adoption Low. (5) There is temperature drift in the strain gauge, and its strain measurement value is distorted under the high temperature condition of drilling.
专利CN108547613A提供一种用于测量深部岩体三维地应力的装置,采用上下两个封隔器对采样段进行封隔,将井液排干后,采用打磨机构对采样段壁面进行打磨,使壁面光滑,通过挤胶机构对采样段涂胶,贴片机构将应变片粘贴在采样段,完成整个贴片固定的工作。该装置在环境复杂的页岩钻井中,采用井下封隔技术可能导致井壁局部坍塌,对钻井造成不利影响,且采用多组结构完成应变片的贴片固定工作,总体结构复杂,不仅加大了生产成本,其容错率也低,不利于设备在深部钻井复杂条件下展开重复测试。Patent CN108547613A provides a device for measuring the three-dimensional geostress of deep rock mass. Two packers are used to seal the sampling section. After the well fluid is drained, a grinding mechanism is used to grind the wall surface of the sampling section to make the wall Smooth, the glue is applied to the sampling section through the glue extrusion mechanism, and the patch mechanism sticks the strain gauge to the sampling section to complete the work of fixing the patch. In the shale drilling with complex environment, the downhole isolation technology of this device may lead to partial collapse of the well wall, which will have an adverse effect on the drilling, and the multi-group structure is used to complete the patch fixing work of the strain gauge. The overall structure is complicated, which not only increases the It reduces the production cost, and its fault tolerance rate is also low, which is not conducive to repeated testing of equipment under complex conditions in deep drilling.
发明内容Contents of the invention
针对现有技术的应用于应力解除法中的应变片易于损坏,且装载有应变片的设备不适用于复杂条件的深部钻井中,本发明提供一种适用于局部壁面应力解除的应力数据测试采集系统及方法,通过特殊设计的探头装置保护高精度应变片免受岩屑以及不规则孔壁的破坏,并对应变片的进行防水封装,在弹簧和探头推杆的配合下实现按压式应变测量,使该装置能直接在高温高压钻井液环境中开展测试。In view of the fact that the strain gauges used in the stress relief method in the prior art are easily damaged, and the equipment loaded with strain gauges is not suitable for deep drilling under complex conditions, the present invention provides a stress data test collection suitable for local wall stress relief The system and method, through the specially designed probe device, protects the high-precision strain gauge from the damage of rock debris and irregular hole walls, and waterproofs the strain gauge, and realizes the pressing strain measurement under the cooperation of the spring and the probe push rod , so that the device can be directly tested in the high temperature and high pressure drilling fluid environment.
为了实现上述目的,按照本发明的一个方面,提供一种适用于局部壁面应力解除的应力数据测试采集系统,包括采用按压方式测量应力的探头装置,所述探头装置包括上端盖、扣帽、应变片、应变片导线、探头推杆、弹簧和探头底座;其中,所述探头推杆一端设有第一环状凸缘,扣帽将上端盖扣压固定于所述第一环状凸缘上;所述上端盖采用柔性材料制成,其中心处设有穿过扣帽的上端盖凸出部,所述应变片设于上端盖凸出部底部;所述探头推杆另一端套设于探头底座内,探头底座可沿探头推杆做轴向运动;所述探头底座上设有第二环状凸缘;所述弹簧的两端分别抵触并固定于第一环状凸缘上和第二环状凸缘上;通过设于探头底座一端的外部驱动机构驱动下,探头底座推动弹簧带动探头推杆向前位移,使上端盖在数据采样阶段始终与采样段井壁保持紧密贴合,应变片根据上端盖形变完成应力的数据采样,采样数据经应变片导线穿过探头推杆和探头底座向外传输,通过数据采集装置将应力采样数据传输至地面设备;所述数据采集装置包括与应变片导线连接的密封接线仓,设于密封接线仓下方并与密封接线仓通信相连的电路仓,设于电路仓一端的水密接头,通过所述水密接头与地面设备数据线的对接,地面设备与应力数据测试采集系统实现实时通信。In order to achieve the above object, according to one aspect of the present invention, a stress data test collection system suitable for local wall stress relief is provided, including a probe device for measuring stress by pressing, and the probe device includes an upper end cover, a buckle cap, a strain relief sheet, strain gauge wire, probe push rod, spring and probe base; wherein, one end of the probe push rod is provided with a first annular flange, and the buckle cap buckles and fixes the upper end cover on the first annular flange; The upper end cover is made of flexible material, the center of which is provided with a protrusion of the upper end cover passing through the buckle cap, the strain gauge is arranged at the bottom of the protrusion of the upper end cover; the other end of the probe push rod is sleeved on the probe In the base, the probe base can move axially along the probe push rod; the probe base is provided with a second annular flange; the two ends of the spring respectively resist and are fixed on the first annular flange and the second On the annular flange; driven by the external drive mechanism at one end of the probe base, the probe base pushes the spring to drive the probe push rod to move forward, so that the upper end cover is always in close contact with the well wall of the sampling section during the data sampling stage, and the strain The sheet completes stress data sampling according to the deformation of the upper end cover, the sampled data is transmitted outward through the strain gauge wire through the probe push rod and the probe base, and the stress sampling data is transmitted to the ground equipment through the data acquisition device; the data acquisition device includes The sealed wiring compartment connected by the sheet wire, the circuit compartment located under the sealed junction compartment and connected to the sealed junction compartment in communication, the watertight joint provided at one end of the circuit compartment, through the docking of the watertight joint and the data line of the ground equipment, the ground equipment and the data line of the ground equipment The stress data test acquisition system realizes real-time communication.
进一步地,所述密封接线仓包括右密封接线仓和左密封接线仓,两者周向布设于电路仓一端上。Further, the sealed junction compartment includes a right sealed junction compartment and a left sealed junction compartment, both of which are circumferentially arranged on one end of the circuit compartment.
进一步地,所述右密封接线仓包括右接线座、右上盖板、右下盖板和应变线接头;所述右上盖板和右下盖板固定连接形成盒体,盒内设有空腔可容纳应变线接头,盒体一端设有小孔可通过应变片导线与应变线接头连接,另一端设有圆柱形空腔,其与设于右接线座前端的接线柱过盈配合,将盒体固定在右接线座前端上。Further, the right sealed wiring compartment includes a right wiring seat, a right upper cover, a right lower cover and a strain wire connector; the right upper cover and the right lower cover are fixedly connected to form a box body, and a cavity is provided inside the box to To accommodate strain wire connectors, one end of the box has a small hole that can be connected to the strain wire connector through the strain gauge wire, and the other end has a cylindrical cavity, which is interference fit with the terminal post at the front end of the right terminal block, and the box body It is fixed on the front end of the right terminal block.
进一步地,所述右接线座后端设有右后板,其上设有密封圈;所述右接线座内还设有贯通底部的空腔,所述电路仓与右接线座贴合处设有开口。Further, the rear end of the right terminal block is provided with a right rear plate, on which a sealing ring is provided; a cavity through the bottom is also provided in the right terminal block, and a joint between the circuit compartment and the right terminal block is provided. There are openings.
进一步地,所述密封接线仓包括右密封接线仓、左密封接线仓,两者周向布设于电路仓一端上。Further, the sealed junction compartment includes a right sealed junction compartment and a left sealed junction compartment, both of which are circumferentially arranged on one end of the circuit compartment.
进一步地,所述左密封接线仓包括左接线座、左上盖板、左后盖、应变线接头、左下盖板和应变线接头。Further, the left sealed wiring compartment includes a left wiring seat, a left upper cover, a left rear cover, a strain wire connector, a left lower cover and a strain wire connector.
进一步地,所述左密封接线仓结构与右密封接线仓相同,包括左接线座、左上盖板、左后盖、应变线接头和左下盖板。Further, the structure of the left sealed wiring compartment is the same as that of the right sealed wiring compartment, including a left wiring seat, a left upper cover, a left rear cover, a strain wire connector and a left lower cover.
进一步地,所述应变片应变片采用防水应变片粘贴胶水粘贴于上端盖凸出部底部的中心处,所述上端盖凸出部底部开口处采用防水胶水进行封口。Further, the strain gauge strain gauge is pasted on the center of the bottom of the protrusion of the upper end cover with waterproof strain gauge glue, and the opening at the bottom of the protrusion of the upper end cover is sealed with waterproof glue.
进一步地,所述上端盖为聚四氟乙烯制成。Further, the upper end cap is made of polytetrafluoroethylene.
本发明还提供一种适用于局部壁面应力解除的应力数据测试采集方法,包括以下步骤:The present invention also provides a method for testing and collecting stress data suitable for local wall stress relief, comprising the following steps:
S1:将数据测试采集系统下放至指定深度后对中并定位;S1: Lower the data test collection system to the specified depth and align and position it;
S2:在外部驱动机构作用下探头装置与侧壁应力解除结构同时向采样段壁面移动,在指定压力下实现探头装置前端与壁面的紧密贴合;S2: Under the action of the external drive mechanism, the probe device and the side wall stress relief structure move to the wall of the sampling section at the same time, and the front end of the probe device is closely attached to the wall under the specified pressure;
S3:在应力解除结构对岩心进行环切解除过程中,应变片记录应力解除区域的应变变化情况并将数据传至数据采集装置;S3: During the process of circumcision and release of the core by the stress relief structure, the strain gauge records the strain change in the stress relief area and transmits the data to the data acquisition device;
S4:数据采集装置与地面设备实现实时通信,使得井下探测设备能在超深钻孔的复杂环境中也能实现对地面进行数据的实时传输,实现按压式应变测量。S4: The data acquisition device realizes real-time communication with the ground equipment, so that the downhole detection equipment can realize real-time data transmission to the ground even in the complex environment of ultra-deep drilling, and realize pressing strain measurement.
总体而言,通过本发明所构思的以上技术方案与现有技术相比,能够取得下列有益效果:Generally speaking, compared with the prior art, the above technical solutions conceived by the present invention can achieve the following beneficial effects:
1.本发明的一种应力数据测试采集系统,通过特殊设计的探头装置保护高精度应变片免受岩屑以及不规则孔壁的破坏,并对应变片的进行防水封装,在弹簧和探头推杆的配合下实现按压式应变测量,使该装置能直接在高温高压钻井液环境中开展测试。1. A stress data test and acquisition system of the present invention protects high-precision strain gauges from debris and irregular hole walls through a specially designed probe device, and waterproofs the strain gauges. With the cooperation of the rod, the press-type strain measurement is realized, so that the device can be directly tested in the high-temperature and high-pressure drilling fluid environment.
2.本发明的一种应力数据测试采集系统,通过选用精度高温漂小的应变片,,在100℃的范围内其受温度影响导致的应变片系数误差范围为0.8±0.5%,有效解决了应变片在井下高温环境下产生的温度漂移使得应变测量失真这一问题。2. A stress data test and acquisition system of the present invention, by selecting strain gauges with low precision and high temperature drift, the error range of strain gauge coefficients caused by the influence of temperature in the range of 100°C is 0.8±0.5%, which effectively solves the problem of The temperature drift of the strain gauge in the high temperature environment downhole makes the strain measurement distorted.
3.本发明的一种应力数据测试采集系统,其探头装置的上端盖采用耐高温耐腐蚀柔性材料制成,能够适应钻井下复杂环境,在施加一定的压力可使其与壁面的紧密贴合,可适应多种壁面环境,粘贴在其底部中心位置应变片可根据上端盖形变完成应力的数据采样,在上端盖和应变片配合下,应力数据测试采集系统可在井下连续进行采样工作,大大提高了应力数据采样效率。3. A stress data test and acquisition system of the present invention, the upper end cover of the probe device is made of high temperature and corrosion resistant flexible materials, which can adapt to the complex environment under drilling, and can make it closely adhere to the wall when a certain pressure is applied. , can adapt to a variety of wall environments, and the strain gauge pasted at the center of the bottom can complete the stress data sampling according to the deformation of the upper end cover. With the cooperation of the upper end cover and the strain gauge, the stress data test acquisition system can continuously carry out sampling work in the well, greatly Improved stress data sampling efficiency.
4.本发明的一种应力数据测试采集系统,通过对数据采集装置采用特殊的密封防水设计,使得应力数据测试采集系统在超深钻孔中也能实现数据的实时传输。4. A stress data test and acquisition system of the present invention adopts a special sealing and waterproof design for the data acquisition device, so that the stress data test and acquisition system can also realize real-time data transmission in ultra-deep boreholes.
5.装载有本发明应力数据测试采集系统的一种井下探测设备,通过按压式探头装置省去了封隔、打磨、挤胶等复杂的机构,不仅提高了设备在钻井内采样的成功率,加快了测试进度,而且能够长时间重复使用,降低了设备整体生产成本;通过密封设计的数据采集装置,使得井下探测设备能在超深钻孔的复杂环境中也能实现对地面进行数据的实时传输。5. A kind of downhole detection equipment loaded with the stress data test and acquisition system of the present invention, through the pressing type probe device, the complex mechanisms such as sealing, grinding, and rubber extrusion are omitted, which not only improves the success rate of sampling in the drilling equipment, The test progress is accelerated, and it can be used repeatedly for a long time, reducing the overall production cost of the equipment; through the sealed design of the data acquisition device, the downhole detection equipment can realize real-time data on the ground even in the complex environment of ultra-deep drilling transmission.
附图说明Description of drawings
图1为本发明实施例一种适用于局部壁面应力解除的应力数据测试采集系统的探头装置结构示意图;Fig. 1 is a schematic structural diagram of a probe device of a stress data test and acquisition system suitable for local wall stress relief according to an embodiment of the present invention;
图2为本发明实施例中探头装置分解结构示意图;Fig. 2 is a schematic diagram of an exploded structure of a probe device in an embodiment of the present invention;
图3为本发明实施例中数据采集装置的结构示意图;Fig. 3 is a schematic structural diagram of a data acquisition device in an embodiment of the present invention;
图4为本发明实施例中右密封接线仓的结构分解示意图;Fig. 4 is a schematic exploded view of the structure of the right sealed junction box in the embodiment of the present invention;
图5为本发明实施例中左密封接线仓的结构分解示意图;Fig. 5 is a schematic exploded view of the structure of the left sealed wiring compartment in the embodiment of the present invention;
图6为本发明实施例适用于局部壁面应力解除的应力数据测试采集方法步骤图。FIG. 6 is a step diagram of a stress data test collection method applicable to local wall stress relief according to an embodiment of the present invention.
在所有附图中,同样的附图标记表示相同的技术特征,具体为:1-上端盖、101-上端盖凸出部、2-扣帽、3-应变片、4-应变片导线、5探头推杆、501-第一环状凸缘、6-弹簧、7-探头底座、701-第二环状凸缘701、8-电路仓、9-右密封接线仓、10-左密封接线仓、11-右接线座、12-左接线座、13-水密接头、14-右上盖板、15-左上盖板、16-左后盖、17-右后盖、18-应变线接头、19-右下盖板、20-左下盖板。In all the accompanying drawings, the same reference numerals represent the same technical features, specifically: 1-upper end cap, 101-upper end cap protrusion, 2-button cap, 3-strain gauge, 4-strain gauge wire, 5- Probe push rod, 501-first annular flange, 6-spring, 7-probe base, 701-second
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。此外,下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
如图1、2所示,本发明提供一种适用于局部壁面应力解除的应力数据测试采集系统,包括探头装置及数据采集装置。通过设于探头装置前端的应变片3,其采用防水封装,能够深钻孔下高温高压的液态环境中展开测试。在探头装置后端的驱动装置驱动下,探头装置与侧壁应力解除结构同时向采样段壁面移动,在指定压力下,实现探头装置前端与壁面的紧密贴合,在应力解除结构对岩心进行环切解除过程中,应变片记录应力解除区域的应变变化情况并将数据传至数据采集装置,所述数据采集装置采用特殊的密封防水设计,可保护数据采集电路板能在在高温高压钻井液环境中向地面设备传输数据。As shown in Figures 1 and 2, the present invention provides a stress data test collection system suitable for local wall stress relief, including a probe device and a data collection device. Through the strain gauge 3 arranged at the front end of the probe device, it adopts a waterproof package, and can be tested in a liquid environment of high temperature and high pressure under deep drilling. Driven by the driving device at the rear end of the probe device, the probe device and the side wall stress relief structure move to the wall of the sampling section at the same time. Under the specified pressure, the front end of the probe device is closely attached to the wall surface, and the core is circumcised in the stress relief structure. During the release process, the strain gauge records the strain change in the stress release area and transmits the data to the data acquisition device. The data acquisition device adopts a special sealed and waterproof design to protect the data acquisition circuit board from the high temperature and high pressure drilling fluid environment. Data transmission to ground equipment.
如图1所示,探头装置包括上端盖1、扣帽2、应变片3、应变片导线4、探头推杆5、弹簧6、探头底座7。其中探头推杆5和探头底座7为空心圆柱结构,探头推杆5的外径与探头底座7内径相匹配,可将其一端设于探头底座7内。弹簧6套设于探头推杆5上,其两端分别与设于探头底座7上的第二环状凸缘701及设于探头推杆5一端第一环状凸缘501处相抵触并进行固定,将探头推杆5与探头底座7通过弹簧6两端进行活动连接。通过设于探头底座7后端的驱动机构驱动下,探头底座7可沿探头推杆5做轴向往复运动。位于探头推杆5一端第一环状凸缘501外圈设有螺纹,通过内圈设有螺纹的扣帽2的配合下,可将上端盖1固定于探头推杆5上。所述上端盖1为耐高温耐腐蚀的柔性材料制成,优选的,可采用聚四氟乙烯制成,其中心设有一端封闭的圆筒状上端盖凸出部101,上端盖凸出部101可穿过扣帽2上设有的同心圆孔与钻孔井壁接触,施加一定压力,上端盖1顶部的上端盖凸出部101可发生形变适以应不规则井壁,从而实现两者的贴合。通过涂有专用的防水应变片粘贴胶水,高精度防水型应变片3粘贴于上端盖凸出部101底部的中心处,此外,可使用防水胶水对上端盖凸出部101底部开口处进行封口,防止井下液体渗入,实现对应变片3的防水封装。优选的,应变片3可采用日本共和电力公司生产的KFWS系列通用箔式应变片进行数据采集工作,其具有防水性能好,精度高,误差随温度漂移较小的特点,可克服应变片在井下高温环境下产生的温度漂移使得应变测量失真这一问题。应变片导线4通过探头推杆5上进入探头底座7,与数据采集装置相连。As shown in FIG. 1 , the probe device includes an
在驱动机构驱动下,探头底座7推动弹簧6带动探头推杆5向前位移,待上端盖1贴至井壁后,继续施加一定压力,上端盖1在数据采样阶段始终与采样段井壁保持紧密贴合,解除应力后,岩芯发生形变,与其接触的柔性上端盖1也随之发生形变,粘贴在上端盖1底部中心位置应变片3可根据形变完成应力的数据采样;采样结束后,驱动机构驱动探头底座7后移,弹簧6回复原状,探头推杆5解除对上端盖1的压力使其脱离井壁,探头装置整体后移收回至井下探测设备内,进行下一步测试工作。Driven by the driving mechanism, the
如图3所示,本发明实施例的数据采集装置包括电路仓8,其为圆柱体结构,内部设有空腔用于固定安装电路板,电路仓8顶部设有水密接头13,电路板通过水密接头13与地面设备进行数据传输;电路仓8柱体一端上密封接线仓与应变片导线4对接,将测得的应力数据传入电路板上,通过电路放大转换后,数据信号经过水密接头13对接的数据线传至地面数据处理中心,进行下一步的数据分析。所述密封接线仓包括右密封接线仓9、左密封接线仓10,两者结构功能相同,周向布设于电路仓8一端上,通过螺栓固定于电路仓8上。As shown in Figure 3, the data acquisition device of the embodiment of the present invention includes a
如图4所示,右密封接线仓9包括右接线座11、右上盖板14、右后板17、右下盖板19,所述右上盖板14和右下盖板19通过螺栓固定连接形成盒体,盒内设有空腔可容纳应变线接头18,盒体一端设有小孔可通过应变片导线4与应变线接头18连接,另一端设有圆柱形空腔,其与设于右接线座11前端的接线柱过盈配合,将盒体固定在右接线座11前端上。右接线座11内设有贯通底部的空腔,电路仓8与右接线座11贴合处设有空腔外径相同的开口,使与接线柱连接的导线从右接线座11内空腔到达电路仓8内部,将采集的应变信号传至电路板。右接线座11后端还设有右后盖17,其一端端面上设有密封圈,可有效防止井下液体渗入,在完成对接线柱后部导线的布置连接后,通过组装右后盖17完成对右接线座11内的空腔部分进行密封的工作。As shown in Figure 4, the right sealed
如图5所示,所述左密封接线仓10包括左接线座12、左上盖板15、左后盖16、应变线接头18、左下盖板20。As shown in FIG. 5 , the left sealed
右密封接线仓9、左密封接线仓10在完成接线工作后对内部空腔部注入耐高温防水胶,使接线处及对接头连接处与外部隔绝,将设有密封圈的左后盖16、右后盖17分别对左接线座12及右接线座11的后端处进行封堵,完成装配后,可有效防止液体渗入;电路仓8采用密封设计,其一端通过固定设有水密接头13与外部通信,电路板设于其内部空腔内,避免井下环境对电路造成干扰。The right sealed
如图6所示,另一实施例中,装载有应力数据测试采集系统井下探测设备在进行数据采集时,包括如下步骤:As shown in Figure 6, in another embodiment, the downhole detection equipment loaded with the stress data test acquisition system includes the following steps when performing data acquisition:
S1:将数据测试采集系统下放至指定深度后对中并定位;S1: Lower the data test collection system to the specified depth and align and position it;
S2:在外部驱动机构作用下探头装置与侧壁应力解除结构同时向采样段壁面移动,在指定压力下实现探头装置前端与壁面的紧密贴合;S2: Under the action of the external drive mechanism, the probe device and the side wall stress relief structure move to the wall of the sampling section at the same time, and the front end of the probe device is closely attached to the wall under the specified pressure;
S3:在应力解除结构对岩心进行环切解除过程中,应变片3记录应力解除区域的应变变化情况并将数据传至数据采集装置;S3: During the process of circumcision and release of the core by the stress release structure, the strain gauge 3 records the strain change in the stress release area and transmits the data to the data acquisition device;
S4:数据采集装置与地面设备实现实时通信,使得井下探测设备能在超深钻孔的复杂环境中也能实现对地面进行数据的实时传输,实现按压式应变测量。S4: The data acquisition device realizes real-time communication with the ground equipment, so that the downhole detection equipment can realize real-time data transmission to the ground even in the complex environment of ultra-deep drilling, and realize pressing strain measurement.
另一实施例中,装载有应力数据测试采集系统井下探测设备在进行数据采集时,可采用上下两组推靠定位对中结构单同步径向展开形成支点,将井下探测设备进行对中并定位,无需对采样段井壁进行坐封、排水,对采样段地质环境影响小,不会造成井壁局部坍塌;应力数据测试采集系统的探头装置与侧壁应力解除结构同时向采样段壁面移动,在指定压力下,实现探头装置前端上端盖1与壁面的紧密贴合,可适应多种壁面环境,无需对壁面进行打磨,同时也省去了注胶工序,通过柔性材料制成上端盖1,将解除应力后的岩芯产生形变传递至应变片3,避免了应变片3与井壁直接接触,可免受岩屑以及不规则孔壁的破坏,大大延长了应变片3的使用寿命,使探测探测设备在井下能连续进行测试工作,无需重复将设备提至地面进行更换应变片3的工作,提高了整个测试流程的效率;探头装置采用的采用日本共和生产的高温防水KFWS系列应变片,在100℃的范围内其受温度影响导致的应变片系数误差范围为0.8±0.5%,钻井高温液体环境对其采集应力数据影响小。通过装载有应力数据测试采集系统,井下探测设备可省去封隔、打磨、挤胶等复杂的机构,不仅提高了设备在钻井内采样的成功率,加快了测试进度,而且能够长时间重复使用,降低了设备整体生产成本。其数据采集装置通过特殊设计的密封仓保护电路板,并对接线处浇注耐高温防水胶使接线处与外部隔绝,有效的阻隔了地下复杂环境对数据传输的干扰,使得井下探测设备能在超深钻孔的复杂环境中也能实现对地面进行数据的实时传输。In another embodiment, when the downhole detection equipment loaded with the stress data testing and acquisition system is collecting data, the upper and lower groups of pushing and positioning centering structures can be synchronously expanded radially to form a fulcrum, and the downhole detection equipment can be centered and positioned. , there is no need to set and drain the well wall of the sampling section, which has little impact on the geological environment of the sampling section and will not cause local collapse of the well wall; the probe device of the stress data test acquisition system and the side wall stress relief structure move to the wall of the sampling section at the same time, Under the specified pressure, the
本领域的技术人员容易理解,以上所述仅为本发明的较佳实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111150128.2A CN113931612B (en) | 2021-09-29 | 2021-09-29 | Stress data test acquisition system and method suitable for local wall stress relief |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111150128.2A CN113931612B (en) | 2021-09-29 | 2021-09-29 | Stress data test acquisition system and method suitable for local wall stress relief |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113931612A CN113931612A (en) | 2022-01-14 |
CN113931612B true CN113931612B (en) | 2023-03-21 |
Family
ID=79277409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111150128.2A Active CN113931612B (en) | 2021-09-29 | 2021-09-29 | Stress data test acquisition system and method suitable for local wall stress relief |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113931612B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114740462B (en) * | 2022-03-30 | 2024-07-09 | 中国科学院武汉岩土力学研究所 | Deep hole wall stress relieving drilling machine data real-time acquisition system and method |
CN114441073B (en) * | 2022-04-07 | 2022-08-16 | 中国科学院武汉岩土力学研究所 | Small-aperture deep-hole ground stress testing system and method for water conservancy exploration drilling |
CN115541064B (en) * | 2022-11-24 | 2023-03-10 | 云南省交通投资建设集团有限公司 | Stress monitoring probe and method suitable for high-ground-stress tunnel chaplet surface |
CN117309060B (en) * | 2023-10-20 | 2024-05-17 | 广东省装饰有限公司 | Building curtain wall structure performance monitoring system based on cloud computing |
CN117629484B (en) * | 2023-11-28 | 2024-09-17 | 中国地质科学院地质力学研究所 | Force measuring device and force measuring system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5445228A (en) * | 1993-07-07 | 1995-08-29 | Atlantic Richfield Company | Method and apparatus for formation sampling during the drilling of a hydrocarbon well |
CN104215364A (en) * | 2014-07-15 | 2014-12-17 | 安徽理工大学 | Self-propelled diameter-variable stress rosette pasting device used for geostress measuring |
CN108414129A (en) * | 2018-04-02 | 2018-08-17 | 长江水利委员会长江科学院 | The direct patch crustal stress of half backpack body releases test device and method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1312764A (en) * | 1971-03-11 | 1973-04-04 | Talbott A C | Borehole and surface strain transducer |
US4599904A (en) * | 1984-10-02 | 1986-07-15 | Nl Industries, Inc. | Method for determining borehole stress from MWD parameter and caliper measurements |
CN101240707B (en) * | 2008-03-13 | 2011-04-13 | 上海交通大学 | Geological borehole wall rock strain measurement device |
CN103075150B (en) * | 2013-02-05 | 2015-04-22 | 上海大屯能源股份有限公司 | In-situ stress testing method of method for relieving stress in original hole site for multiple times |
CN103556992B (en) * | 2013-10-25 | 2016-03-30 | 中国矿业大学 | A kind of acquisition methods of fiber grating geostatic stress |
CN104453849A (en) * | 2014-10-20 | 2015-03-25 | 成都创源油气技术开发有限公司 | Shale gas reservoir three-dimensional geological stress predication evaluation method |
CN105507876B (en) * | 2015-12-14 | 2016-11-02 | 中国科学院武汉岩土力学研究所 | A Drilling and Measuring Integrated Device Based on Stress Relief Method |
CN107588877A (en) * | 2017-10-15 | 2018-01-16 | 安徽理工大学 | A kind of recyclable geostress survey device |
CN108547613B (en) * | 2018-06-13 | 2023-09-15 | 中国科学院武汉岩土力学研究所 | Device for measuring three-dimensional ground stress of deep rock mass |
CN109946008B (en) * | 2019-04-17 | 2024-05-28 | 中南大学 | Device and method for measuring stress relief method of spherical inclusion true three-dimensional original rock |
CN110907086B (en) * | 2019-11-27 | 2020-10-09 | 中国科学院武汉岩土力学研究所 | A three-dimensional in-situ stress determination method based on borehole wall displacement measurement |
-
2021
- 2021-09-29 CN CN202111150128.2A patent/CN113931612B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5445228A (en) * | 1993-07-07 | 1995-08-29 | Atlantic Richfield Company | Method and apparatus for formation sampling during the drilling of a hydrocarbon well |
CN104215364A (en) * | 2014-07-15 | 2014-12-17 | 安徽理工大学 | Self-propelled diameter-variable stress rosette pasting device used for geostress measuring |
CN108414129A (en) * | 2018-04-02 | 2018-08-17 | 长江水利委员会长江科学院 | The direct patch crustal stress of half backpack body releases test device and method |
Non-Patent Citations (1)
Title |
---|
吴满路 ; 张重远 ; .新型压磁应力解除测量系统及其测试分析.2016,第35卷(第S1期),全文. * |
Also Published As
Publication number | Publication date |
---|---|
CN113931612A (en) | 2022-01-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN113931612B (en) | Stress data test acquisition system and method suitable for local wall stress relief | |
CN108547613B (en) | Device for measuring three-dimensional ground stress of deep rock mass | |
CN113605886B (en) | Deep drilling complex environment local wall stress relieving method test system | |
CN105181199B (en) | A kind of side hole stress relief method of detecting earth stress | |
CN109029235B (en) | A mechanical expansion type hole wall deformation sensor for drilling and monitoring method | |
CN104819802B (en) | Abyssal floor excess pore water pressure measures feeler lever range protection device | |
CN115127716A (en) | Rock mass parameter in-situ test system and method by small local wall stress relief method | |
CN114740462B (en) | Deep hole wall stress relieving drilling machine data real-time acquisition system and method | |
CN213422522U (en) | Closed hydraulic type integral calibration miniature three-dimensional soil pressure box device | |
CN111413217A (en) | A kind of deep soil shear wave velocity testing device and method | |
CN114441073A (en) | Small-aperture deep-hole ground stress testing system and method for water conservancy exploration drilling | |
CN203324108U (en) | Active and passive combined acoustic testing and transfusive testing association system for rock triaxial test | |
CN213360089U (en) | Device for determining impression direction of dry hole hydraulic fracturing method | |
CN108168621B (en) | Device for simultaneously measuring water pressure, temperature and mining stress | |
CN112857642B (en) | Method for measuring soil pressure in multiple depths | |
CN105507226A (en) | Method for eliminating impacts of dowel bar bending on accuracy of spiral plate load test and displacement detector used in same | |
CN205102959U (en) | Tensile force measurement device under water | |
CN114109351A (en) | Downhole WOB Torque Measurement Tool | |
CN212027771U (en) | Oil well pressure test monitoring recorder | |
CN117629484B (en) | Force measuring device and force measuring system | |
CN204457739U (en) | Water injection well tubular column atress testing arrangement | |
CN105781526A (en) | Stress testing device and stress testing method for water injection well pipe column | |
CN221646915U (en) | Expansion type optical fiber logging platform | |
CN201137059Y (en) | Rock in situ tester probe | |
CN221041724U (en) | Universal mechanical interface for downhole instrument |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |