JPS61253402A - Well-sinking caliper - Google Patents

Well-sinking caliper

Info

Publication number
JPS61253402A
JPS61253402A JP60094196A JP9419685A JPS61253402A JP S61253402 A JPS61253402 A JP S61253402A JP 60094196 A JP60094196 A JP 60094196A JP 9419685 A JP9419685 A JP 9419685A JP S61253402 A JPS61253402 A JP S61253402A
Authority
JP
Japan
Prior art keywords
case
arms
movable tube
support arm
axis
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.)
Granted
Application number
JP60094196A
Other languages
Japanese (ja)
Other versions
JPH0687002B2 (en
Inventor
Yoshinobu Hirako
平子 喜信
Ken Ikeuchi
研 池内
Hisayoshi Nakamura
中村 久由
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Metals and Chemical Co Ltd
Original Assignee
Japan Metals and Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Metals and Chemical Co Ltd filed Critical Japan Metals and Chemical Co Ltd
Priority to JP60094196A priority Critical patent/JPH0687002B2/en
Publication of JPS61253402A publication Critical patent/JPS61253402A/en
Publication of JPH0687002B2 publication Critical patent/JPH0687002B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

PURPOSE:To enable continuous measurement of inside dimensions of a well, by allowing a movable tube to move along the case axis through a coil spring accommodated in the case. CONSTITUTION:Supporting arms 8a, 8b and auriliary arms 7a, 7b are brought to contact with the outer periphery of a case 2 collectively and a hook 16 is clamped by a clamping member 13 for introduction of the whole assembly into the well. Upon reaching of the assembly of the specified depth and operation of a timer T, a rod 12 recedes to release engagement of clamping of the member 13 and the hook 16. Simultaneously, a compressed coil spring 6 restores it original extended condition abruptly to push a movable tube 4 against the spring 6 and the other ends of the arms 7a, 7b pivoted by the tube 4 are opened in the radial direction of the case 2 with the axis supporting points P as the axes and the arms 8a, 8b are opened to the radially outside direction of the case also with the axis falcrum points Q as the axes for contacts with the wall surface outside of the caliper 1. Later, slow lifting of the caliper causes the arm 8a to change its degree of opening and this change is transmitted to a rod 11 inside a recording unit R for continuous recording.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は地熱井1石油井、温泉井等の各種坑井の各深度
におけるスケールの付着状況を連続的に計測できる坑井
用キャリパ−に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a caliper for wells that can continuously measure the state of scale adhesion at each depth of various wells such as geothermal wells, oil wells, and hot spring wells. It is something.

〔従来の技術〕[Conventional technology]

前記の如き坑井は一般的には地表から掘削機を用いて所
定の杭径に掘削しているが、長期間使用する間に1.地
中から噴出する高圧若しくは高温流体等によって地下深
部に於て坑壁が崩壊し、そのため所要量の流体を得るこ
とができなくなったり、甚しい場合には複数ケ所の坑壁
等の崩壊等によって坑井が閉塞し、流体の採取不能等を
生ずるおそれもある。
The above-mentioned wells are generally excavated from the ground surface using an excavator to a predetermined pile diameter, but during long-term use, 1. High-pressure or high-temperature fluid gushing out from underground may cause the walls of the mine to collapse deep underground, making it impossible to obtain the required amount of fluid, or in extreme cases, the walls of the mine may collapse in multiple locations. There is also a risk that the well will become clogged, making it impossible to collect fluid.

また、流体、特に地熱蒸気等では、地熱蒸気に随伴する
熱水によって当初の杭径を維持できない場合がある。即
ち、地熱蒸気に随伴して噴出する熱水には、地殻深部の
高温、高圧状態下で珪酸その他各種の地殻構成成分が溶
解しており、これが坑井内を上昇しつ\噴出する間に雰
囲気条件の変化によって急速に凝固、析出して微小粒子
を形成し、これが坑壁にスケールとして付着、堆積し、
杭径を狭めている。従って、か\る場合には、坑壁のど
の深度でどの程度のスケールが付着し、堆積しているか
を予知することが地熱発電の定常運転にとって不可欠で
ある。
Furthermore, in the case of fluids, particularly geothermal steam, etc., the original diameter of the pile may not be maintained due to the hot water accompanying the geothermal steam. In other words, the hot water ejected along with the geothermal steam contains silicic acid and various other crustal components dissolved under the high temperature and high pressure conditions deep in the earth's crust, and as it rises inside the well, the atmosphere changes. Due to changes in conditions, it rapidly solidifies and precipitates to form fine particles, which adhere and accumulate as scale on the mine walls.
The pile diameter is narrowed. Therefore, in such cases, it is essential for the steady operation of geothermal power generation to predict how much scale is attached and deposited at what depth on the mine wall.

従来、坑井のスケールを計測する場合多くは電気的手段
によって計測しているが、電気的手段では坑井からたえ
ず噴出する流体、特に地熱井等では地熱蒸気に随伴する
熱水によシ絶縁不良、接触不良を生じ、精度が悪く、頻
繁な部品の交換を強いられ、作業も繁雑である。
Conventionally, the scale of wells is often measured by electrical means, but electrical means are insulated from the fluid that constantly gushes out from the well, especially the hot water that accompanies geothermal steam in geothermal wells. It causes defects and poor contact, has poor accuracy, requires frequent parts replacement, and is complicated to work with.

〔本発明が解決しようとする問題点〕[Problems to be solved by the present invention]

本発明は上述のようにたえず流体が噴出している坑井内
のスケールを連続的に、かつ、正確に測定できる坑井用
キャリバーを提供することにある。
An object of the present invention is to provide a caliber for wells that can continuously and accurately measure the scale in a well where fluid is constantly gushing out as described above.

〔問題点を解決するための手段〕[Means for solving problems]

本発明はケースに装着され、かつ、張設されているコイ
ルバネによってケースの軸に沿って摺動する可動管が組
付けられておシ、該可動管に補助アームの一端が軸支さ
れており、その他端に、一端がケースに軸支された支持
アームの他端が回動自在に軸支されており、かつ補助ア
ームと支持アームとの軸支点がケース半径外方へ拡開、
縮小するようになってい本と共に、前記軸支点の拡開、
縮小が記録部内の回転軸に伝達されて記録されるように
構成されており、他方、前記ケースの軸に沿って支持ア
ームの係止部材が取付けられた坑井用キャリバーである
The present invention includes a movable tube that is attached to a case and slides along the axis of the case by a tensioned coil spring, and one end of an auxiliary arm is pivotally supported by the movable tube. , the other end of a support arm, one end of which is pivotally supported by the case, is rotatably supported, and the pivot point between the auxiliary arm and the support arm expands outward from the radius of the case.
Expansion of the pivot point along with the book becoming smaller;
The wellbore caliber is configured such that the reduction is transmitted to a rotation axis in the recording section and recorded, and on the other hand, a locking member of the support arm is attached along the axis of the case.

〔作用、効果〕[action, effect]

本発明は以上の如き構成のものからなシ、計測の手段が
支持アームの拡開、縮小を通じて記録できる機械的手段
からなるものであって、ケースに組込まれているコイル
バネな介して可動管がケースの軸に沿って摺動できるよ
うになっている。
The present invention is not configured as described above, but the measurement means is a mechanical means that can record the expansion and contraction of the support arm, and the movable tube is It is designed to be able to slide along the axis of the case.

前記可動管は、ケース内部に取付けられている固定管に
外嵌しており、該固定管に取付けられているバネ座と可
動管との間にコイルバネが張設され、該コイルバネの弾
性によって可動管が固定管の軸に沿って摺動できるよう
になっている。
The movable tube is fitted onto a fixed tube installed inside the case, and a coil spring is stretched between the spring seat attached to the fixed tube and the movable tube, and the elasticity of the coil spring causes the movable tube to move. The tube is allowed to slide along the axis of the fixed tube.

また、前記可動管には補助アームの一端が軸支されてお
り、また、可動管が組付けられているケースには、支持
アームの一端が軸支され、その他端が前記補助アームの
他端と回動自在に軸支されており、前記可動管の摺動に
より補助アームの他端がケース半径外方へ拡開、縮小す
ると同時に支持アームの他端が補助アームの他端と同様
にケース半径外方へ拡開、縮小するようになっている。
Further, one end of the auxiliary arm is pivotally supported on the movable tube, and one end of the support arm is pivotally supported on the case in which the movable tube is assembled, and the other end is the other end of the auxiliary arm. As the movable tube slides, the other end of the auxiliary arm expands and contracts outward from the case radius, and at the same time, the other end of the support arm expands and contracts in the same way as the other end of the auxiliary arm. It expands and contracts outward in the radius.

前記支持アームは、ケース半径外方へ拡開することによ
ってケース外方の坑壁に接触でき、坑壁にスケールが付
着している場合には、支持アームの他端が縮小し、同時
に補助アームの他端も縮小し、これに伴なって可動管が
張設しているコイルバネを圧縮し、またスケールの付着
のない場合には、コイルバネの弾性によって支持アーム
が拡開して坑壁に接触できるようになっている。
The support arm can contact the pit wall outside the case by expanding outward in the radius of the case, and if scale is attached to the pit wall, the other end of the support arm contracts and at the same time the auxiliary arm The other end also contracts, compressing the coil spring tensioned by the movable tube, and if there is no scale attached, the support arm expands due to the elasticity of the coil spring and comes into contact with the mine wall. It is now possible to do so.

前記支持アームと補助アームとの組部材は、好ましくは
複数組取付けることが良いが、その内支持アームの1本
はケースに軸支されている一端を延出して扇状歯車に形
成され、該扇状歯車が歯車機構に連接しておシ、支持ア
ームの他端の拡開、縮小に応じて扇状歯車で歯車機構を
作動し、さらに歯車機構に連結している記録部内の記録
用ロッドによって、記録部内の金属板チャートに連続的
に記録できるようになっている。
Preferably, a plurality of sets of assembly members of the support arm and the auxiliary arm are installed, and one of the support arms is formed into a fan-shaped gear by extending one end that is pivotally supported by the case. The gear is connected to the gear mechanism, and the fan gear operates the gear mechanism according to the expansion or contraction of the other end of the support arm, and the recording rod in the recording section connected to the gear mechanism records the data. It is now possible to record continuously on a metal plate chart within the department.

他方、前記固定管の内部に一端が支持アームの係止部を
形成し、その他端がタイマーに接続する係止部材が取付
けられている。
On the other hand, a locking member is attached inside the fixed tube, one end of which forms a locking portion of the support arm, and the other end of which is connected to a timer.

本発明を使用するには、支持アームを係止部材で係止し
て坑井内へ挿入する。この場合、支持アーム及び補助ア
ームは夫々ケースに沿って集束された状態とされている
から、坑口から簡単に坑井内へ挿入することができる。
To use the invention, the support arm is locked with the locking member and inserted into the wellbore. In this case, since the support arm and the auxiliary arm are each converged along the case, they can be easily inserted into the well from the wellhead.

尚、この場合タイマーは所定の時間に作動するようにセ
ットされる。
In this case, the timer is set to operate at a predetermined time.

前記のように支持アーム、補助アームを集束した状態で
は、可動管が補助アームに押圧されコイルバネを圧縮し
ている。
When the support arm and the auxiliary arm are brought together as described above, the movable tube is pressed by the auxiliary arm and compresses the coil spring.

前記のようにして坑井内へ挿入されたキャリパ−は、タ
イマーのセットされた時間に達すると、係止部材の係止
が解除され、支持アームの他端がフリーとなり、従って
可動管が圧縮されているコイルバネの弾性によって押圧
され、該可動管に軸支されている補助アームの他端がケ
ース半径外方へ拡開し、同時にこれに軸支されている支
持アームの他端もケース半径外方へ拡開し、支持アーム
が坑壁に接触する。
When the caliper inserted into the wellbore as described above reaches the time set by the timer, the locking member is released, the other end of the support arm becomes free, and the movable tube is compressed. The other end of the auxiliary arm, which is supported by the movable tube, expands outward from the case radius, and at the same time, the other end of the support arm, which is supported by this, also expands outside the case radius. The support arm contacts the shaft wall.

前記支持アームは、坑壁のスケール付着状態に応じて支
持アームの他端の拡開の度合が連続的に変化し、この変
化が扇状歯車、歯車機構を介して記録用ロッドに伝達さ
れ、金属板チャートに連続的に記録することができる。
The degree of expansion of the other end of the support arm continuously changes depending on the state of scale adhesion on the pit wall, and this change is transmitted to the recording rod via the fan gear and gear mechanism, and the metal It can be recorded continuously on the board chart.

本発明は従来の電気的計測法とは異なり、機械的手段に
よって計測するものであるから、噴出する流体の影響を
受けることが少なく、また構造も簡単であるから故障も
少ないという利点がある。尚、本発明における支持アー
ムと補助アームとの組部材は、複数組取付けることもで
きるが、これに限られずケースの位置が一定位置に維持
されればよく、その場合には記録用ロッドを回転させる
ための支持アームと補助アームの1組であってもよい。
Unlike the conventional electrical measurement method, the present invention measures by mechanical means, so it is less affected by the ejected fluid, and has a simple structure, which has the advantage of fewer failures. Note that a plurality of assembly members of the support arm and the auxiliary arm in the present invention can be attached, but the case is not limited to this, as long as the position of the case is maintained at a constant position, and in that case, the recording rod can be rotated. It may also be one set of a support arm and an auxiliary arm for the purpose of

以上の如く本発明は、坑井のスケール付着状態を支持ア
ームの拡開の度合により機械的に計測するものであるか
ら、従来の電気的計測の如く噴出する流体の影響を受け
ることが少なく、連続的に精度良く計測でき、またその
構造も簡単であるから故障も少なく長期間使用すること
ができる。
As described above, the present invention mechanically measures the state of scale adhesion in a wellbore based on the degree of expansion of the support arm, so it is less affected by ejected fluid unlike conventional electrical measurement. It can measure continuously with high precision, and its structure is simple, so it can be used for a long period of time with few failures.

〔実施例〕〔Example〕

第1図乃至第3図は本発明の一実施例を示したものであ
るが、つぎにこれら図面によって本が嵌着されており、
該固定管3に可動管4が外嵌されていると共に、該固定
管3にバネ座5が取付けられ、該バネ座5と可動管4と
の間にコイルバネ6が張設され、該コイルバネ60弾性
によって可動管4が固定管3に沿って摺動自在とされて
いる。
FIGS. 1 to 3 show an embodiment of the present invention, and as shown in FIGS.
A movable tube 4 is fitted onto the fixed tube 3, a spring seat 5 is attached to the fixed tube 3, and a coil spring 6 is stretched between the spring seat 5 and the movable tube 4. The movable tube 4 is made slidable along the fixed tube 3 due to its elasticity.

前記可動管4には補助アーム7a、7bの一端が軸支さ
れており、その他端は前記一端の軸支点CP)を軸とし
てケース2半径外方へ拡開、縮小するようになっている
One end of the auxiliary arms 7a, 7b is pivotally supported by the movable tube 4, and the other end expands and contracts radially outward of the case 2 around the pivot point CP of the one end.

また、前記補助アーム7a、7bの他端は、ケース2に
一端が軸支されている支持アーム8a+8bの他端と夫
々回動自在に軸支されており、前記補助アーム7a、7
bの他端がケース半径外方へ拡開、縮小するのに伴なっ
て支持アーム8a、8bの他端もケース2の軸支点(Q
を軸としてケース2半径外方へ拡開、縮小するようにな
っている。尚、第1図及び第2図では支持アーム8a、
8b及び補助アーム7a、7bと2組であるが、図示例
のものは第3図のように支持アームは8a〜8d、補助
アームは7a〜7dと4組が取付けられたものである。
The other ends of the auxiliary arms 7a, 7b are rotatably supported by the other ends of support arms 8a+8b, one end of which is supported by the case 2.
As the other end of the support arms 8a and 8b expands and contracts outward from the case radius, the other ends of the support arms 8a and 8b also move toward the pivot point (Q) of the case 2.
The case 2 expands and contracts outward in the radius around the axis. In addition, in FIGS. 1 and 2, the support arm 8a,
There are two sets of support arms 8b and auxiliary arms 7a and 7b, but in the illustrated example, as shown in FIG. 3, four sets of support arms 8a to 8d and auxiliary arms 7a to 7d are attached.

しかし、このように4組必要とするものではなく、3〜
2組でもよく、またケース2を坑井内の一走位置に維持
できる場合には1組のみであってもよい。以下支持アー
ム、補助アームは、夫々8a、8b及び7a、7bとし
て説明する。
However, it does not require 4 sets like this, but 3~
Two sets may be used, or only one set may be used if the case 2 can be maintained at one running position in the well. The support arms and auxiliary arms will be described below as 8a, 8b and 7a, 7b, respectively.

前記支持アーム8aは第1図のようにケース2の軸支点
(Qを延出して扇状歯車9に形成されており、該扇状歯
車9が歯車機構10を介して記録部(RJ内の記録用ロ
ッド11を回転するようになっている。
As shown in FIG. 1, the support arm 8a is formed into a fan-shaped gear 9 by extending the shaft fulcrum (Q) of the case 2, and the fan-shaped gear 9 is connected to the recording section (for recording in RJ) via a gear mechanism 10. The rod 11 is rotated.

また、前記固定管3の内部には、第2図のようにロッド
12が嵌着されており、該ロッド12の一端に係止部材
13が取付けられておシ、該ロッド12の他端はタイマ
ー((1)に接続している。
Further, a rod 12 is fitted inside the fixed tube 3 as shown in FIG. 2, a locking member 13 is attached to one end of the rod 12, and the other end of the rod 12 is Connected to the timer ((1).

前記係止部材13は、固定管3に外嵌しており、該固定
管3に形成されている案内溝14に挿通しているピン1
5でロッド12に取付けられており、タイマー((1)
の作動によってロッド12が軸方向に進退するのに伴な
いピン15が案内溝14内を進退するようになっている
The locking member 13 is fitted onto the fixed tube 3, and the pin 1 is inserted into a guide groove 14 formed in the fixed tube 3.
5 is attached to the rod 12, and the timer ((1)
The pin 15 moves back and forth within the guide groove 14 as the rod 12 moves forward and backward in the axial direction.

本発明を使用するには、第1図の実線で示すように支持
アーム8a、8b及び補助アーム7 a +7bをケー
ス2外周へ集束し、該支持アーム8a 、13 b内側
に形成されているフック16を係止部材13で係止し、
タイマー(T)をセットして坑井内へ挿入する。このよ
うに支持アーム8a。
To use the present invention, the support arms 8a, 8b and the auxiliary arms 7a+7b are gathered around the outer periphery of the case 2 as shown by the solid lines in FIG. 1, and the hooks formed inside the support arms 8a, 13b are 16 is locked with the locking member 13,
Set the timer (T) and insert it into the well. Thus the support arm 8a.

8b及び補助アーム7a、7bをケース2外周に集束す
ると、可動管4はコイルバネ6を圧縮して固定される。
8b and the auxiliary arms 7a, 7b are brought together around the outer periphery of the case 2, the movable tube 4 is fixed by compressing the coil spring 6.

尚、この場合、支持アーム8a。In this case, the support arm 8a.

8bと補助アーム7a、7bとの軸支点(6)は、ケー
ス2の外径よシ僅かに外方へ突出した状態に維持すれば
、係止部材13の係止が解かれた場合、支持アーム13
a、3b及び補助アーム7 a +7bを確実にケース
2半径外方へ拡開させることができる。
If the pivot points (6) of the auxiliary arms 8b and the auxiliary arms 7a and 7b are maintained in a state that slightly protrudes outward from the outer diameter of the case 2, when the locking member 13 is released, the support Arm 13
a, 3b and the auxiliary arm 7a+7b can be reliably expanded outward by the radius of the case 2.

本発明のキャリパ−1が所定の深度に達し、タイマー(
′11が作動するとロッド12がタイマーσ)方向へ後
退し、係上部材13と支持アーム8a、8bのフック1
6との係止が解かれる。
When the caliper 1 of the present invention reaches a predetermined depth, the timer (
'11 is activated, the rod 12 retreats in the direction of the timer σ), and the hook 1 of the engaging member 13 and the support arms 8a, 8b
6 is released.

係止が解かれると同時に圧縮されていたコイルバネ6が
急激に元の張設状態に戻り、可動管4がコイルバネ6に
押圧されると共に、可動管4に軸支されている補助アー
ム7a、7bの他端が軸支点(P)を軸として第1図ウ
ニ点鎖線のようにケース2半径外方へ拡開し、ケース2
に一端が取付けられている支持アーム8a、8bも、軸
支点(Qを軸としてケース2半径外方へ拡開し、キャリ
パ−1外方の坑壁に接触する。
At the same time as the lock is released, the compressed coil spring 6 suddenly returns to its original tensioned state, and the movable tube 4 is pressed by the coil spring 6, and the auxiliary arms 7a and 7b, which are pivotally supported by the movable tube 4, The other end expands outward from the radius of the case 2 as shown by the dotted chain line in Figure 1 about the shaft fulcrum (P), and the case 2
Support arms 8a and 8b, one end of which is attached to the other end, also expand radially outward of the case 2 with the pivot point (Q) as an axis, and come into contact with the pit wall outside the caliper 1.

前記のように支持アーム8a、8bが坑壁に接触した後
キャリバー1を徐々に引上げれば、支持アーム8aは坑
壁の状態によって拡開の度合が変化し、この変化が扇状
歯車9及び歯車機構10を介して記録部(RJ内のロッ
ド11に伝達され、連続的に記録することができる。
If the caliber 1 is gradually pulled up after the support arms 8a and 8b come into contact with the shaft wall as described above, the degree of expansion of the support arm 8a will change depending on the state of the shaft wall, and this change will affect the fan gear 9 and the gear. The information is transmitted to the recording unit (rod 11 in the RJ) via the mechanism 10, and can be continuously recorded.

本発明は支持アームga、Bbの拡開、縮小がこれに軸
支している補助アーム7a、7bの拡開縮小に連動する
ものであるから、支持アーム8a、8bの作動がスムー
ス、かつ、確実であり、機械的なズレ等のおそれがなく
精度よく計測することができる。
In the present invention, since the expansion and contraction of the support arms ga and Bb is linked to the expansion and contraction of the auxiliary arms 7a and 7b that are pivotally supported thereon, the operation of the support arms 8a and 8b is smooth, and It is reliable and can be accurately measured without fear of mechanical deviation.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の一部断面を示す正面図、第
2図は係上部材及び可動管の要部拡大断面図、第3図は
第2図中■−■線断面図である。 1:キャリパ−,2:ケース、3:固定管、4:可動管
、5:バネ座、6:コイルバネ、?a〜7d:ミル7d
:補助アームd:支持アーム、9:扇状歯車、10:歯
車機構、11:記録用ロッド、12:ロッド、13:係
止部材、14:案内溝、15:ピン、16:フック。
Fig. 1 is a partially sectional front view of an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts of the lifting member and the movable tube, and Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2. It is. 1: Caliper, 2: Case, 3: Fixed tube, 4: Movable tube, 5: Spring seat, 6: Coil spring, ? a~7d: Mill 7d
: Auxiliary arm d: Support arm, 9: Fan gear, 10: Gear mechanism, 11: Recording rod, 12: Rod, 13: Locking member, 14: Guide groove, 15: Pin, 16: Hook.

Claims (1)

【特許請求の範囲】[Claims] ケースに装着され、かつ、張設されているコイルバネに
よつてケースの軸に沿つて摺動する可動管が組付けられ
ており、該可動管に補助アームの一端が軸支されており
、その他端に、一端がケースに軸支された支持アームの
他端が回動自在に軸支されており、かつ、補助アームと
支持アームとの軸支点がケース半径外方へ拡開、縮小す
るようになつていると共に、前記軸支点の拡開、縮小が
記録部内の回転軸に伝達されて記録されるように構成さ
れており、他方前記ケースの軸に沿つて支持アームの係
止部材が取付けられていることを特徴とする坑井用キヤ
リパー。
A movable tube is attached to the case and slides along the axis of the case by a tensioned coil spring, and one end of the auxiliary arm is pivotally supported by the movable tube. One end of the support arm is pivotally supported by the case, and the other end is rotatably supported by the case, and the pivot point between the auxiliary arm and the support arm expands and contracts outward from the radius of the case. The expansion and contraction of the shaft fulcrum is transmitted to a rotating shaft in the recording section and recorded, and the locking member of the support arm is attached along the axis of the case. A caliper for wells.
JP60094196A 1985-05-01 1985-05-01 Geothermal well caliper Expired - Fee Related JPH0687002B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60094196A JPH0687002B2 (en) 1985-05-01 1985-05-01 Geothermal well caliper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60094196A JPH0687002B2 (en) 1985-05-01 1985-05-01 Geothermal well caliper

Publications (2)

Publication Number Publication Date
JPS61253402A true JPS61253402A (en) 1986-11-11
JPH0687002B2 JPH0687002B2 (en) 1994-11-02

Family

ID=14103542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60094196A Expired - Fee Related JPH0687002B2 (en) 1985-05-01 1985-05-01 Geothermal well caliper

Country Status (1)

Country Link
JP (1) JPH0687002B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08508318A (en) * 1993-01-27 1996-09-03 エルフ・アキテーヌ・プロデイクシオン Method for determining changes in the shape of a boring hole
CN113108683A (en) * 2021-04-16 2021-07-13 湖北省城市地质工程院 Automatic imaging measurement method and device for three-dimensional depiction of large-caliber well body structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733524A (en) * 1980-08-04 1982-02-23 Kunio Honda Fishing hook wit sea algae

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733524A (en) * 1980-08-04 1982-02-23 Kunio Honda Fishing hook wit sea algae

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08508318A (en) * 1993-01-27 1996-09-03 エルフ・アキテーヌ・プロデイクシオン Method for determining changes in the shape of a boring hole
CN113108683A (en) * 2021-04-16 2021-07-13 湖北省城市地质工程院 Automatic imaging measurement method and device for three-dimensional depiction of large-caliber well body structure

Also Published As

Publication number Publication date
JPH0687002B2 (en) 1994-11-02

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