WO1980002878A1 - Method of installing electrode unit for bed detection - Google Patents

Method of installing electrode unit for bed detection Download PDF

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Publication number
WO1980002878A1
WO1980002878A1 PCT/JP1979/000156 JP7900156W WO8002878A1 WO 1980002878 A1 WO1980002878 A1 WO 1980002878A1 JP 7900156 W JP7900156 W JP 7900156W WO 8002878 A1 WO8002878 A1 WO 8002878A1
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WO
WIPO (PCT)
Prior art keywords
logging
borehole
electrode
hole
work
Prior art date
Application number
PCT/JP1979/000156
Other languages
French (fr)
Japanese (ja)
Inventor
K Ida
Original Assignee
K Ida
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 K Ida filed Critical K Ida
Priority to PCT/JP1979/000156 priority Critical patent/WO1980002878A1/en
Publication of WO1980002878A1 publication Critical patent/WO1980002878A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging

Definitions

  • the technical fields related to the present invention are borehole engineering, petroleum engineering, geophysical exploration, and especially electrical logging.
  • the present invention has been solved by a method of forcibly installing a problem with a method of hanging an electrode portion depending on gravity conventionally.
  • the drilling hole drilled in various directions is forced to propell the electrode portion to the logging start position in the hole by using the drilling tube for drilling, so that the logging operation can be performed.
  • This is a method of setting up the electrode section at the preparation stage of logging work.
  • This operation uses existing excavation pipes, excavators and logging equipment, and additionally uses the capsule of the present invention and the connection device between the power bussel.
  • the borehole mentioned here refers to a hole dug into the ground by an excavator, and includes a small diameter hole with a diameter of about 3 centimeters to a large diameter hole with a diameter of 1 meter or more.
  • the core is at every angle O
  • Logging work referred to here is a work performed on a borehole using a logging device equipped with a logging cable.
  • the physical properties of rocks from the ground are measured by resistivity method, induction electromagnetic method, Self-potential method, sonic logging method, radioactive logging method, temperature logging method, etc.
  • the electrode part referred to here is the terminal part and the movable part of the logging device], the electrode inserted into the borehole, and the electrode attached to the periphery of the electrode for each logging operation. It is a generic term that includes circuits, components, equipment, accessories, and covers used. According to
  • the capsule used in the working method of the present invention is a circle with one end closed.
  • the capsule consists only of chemically synthesized products such as bakelite • vinyl chloride and plastic or non-metallic materials such as wood.
  • the fitting used in the working method of the present invention is made of metal and has a cylindrical appearance.
  • the working method of the present invention comprises the following processes.
  • Ru disadvantages there 1 5 take Hi ⁇ to and time in a method of hanging installed.
  • the conventional hanging method is convenient, and if the conditions inside the hole are a little bad, the forced installation method of the present invention is appropriate and has the advantage that it can be implemented steadily.
  • the time can be shortened as a result as compared with the case where the hanging installation method is repeatedly performed.
  • Fig. 1 is a perspective view of the bush.
  • Fig. 2 is a perspective view of the connection tool.
  • m 3 doctor is a longitudinal view of the borehole.
  • Fig. 4 shows the stage of rod insertion
  • Fig. 5 shows the stage of unloading and lifting
  • Fig. 6 oy.Pi
  • FIG. 3 is a longitudinal sectional view of a borehole showing each embodiment in an installation stage. (1): borehole, (2): Kassel,
  • the starting position of the logging operation should be selected at the bottom of the hole if possible. For this reason, a projection is provided at the tip of the force busel, the force busel reaches the bottom of the hole, and the drilling pipe for drilling is rotated slightly to reduce the force busel. Easy to leave ⁇ (o
  • the working method of the present invention is applied to the borehole of the low angle or the lower side of the high angle excluding the borehole of the upper angle.
  • a koto whose core is not necessarily straight but curved is inevitable.
  • the chemical synthetic material department is preferred if possible, and it is possible to take the form according to the type of logging work and it is inexpensive.
  • the working method of the present invention can be used for boreholes for oil and natural gas.
  • Drilling excavation can be used for drilling of oil and natural gas when the electrode part, which can drop down due to gravity due to the pressure of the fluid overflowing from the hole, can be dropped.
  • the working method of the present invention it is possible to install the electrode city below the overflow area.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Method of installing an electrode unit in an experimentally drilled hole for bed detection. A coupler (4) is attached to the end of an excavating tube (5) and a non-metallic capsule (2) into which an electrode unit (3) has been inserted is attached to the coupler (4). The tube (5) is inserted into the drilled hole, and the capsule (2) is then separated from the tube (5) at the position for bed detection. The tube (5) is then lifted up from the hole. A bed detection cable (6) is retrieved by winding to pull out the electrode unit (3) from the capsule (2). Since this method inserts and installs the electrode unit while supporting it, it can detect a wider range of beds as compared with the conventional method of hanging it by means of gravity.

Description

明 細 書  Specification
A . 発明の名称  A. Title of invention
- 検層作業のための電極部設置方法  -How to install electrodes for logging work
B . 技術分野  B. Technical Field
本発明の関連技術分野は試錐工学 · 石油工学 · 物理探査法 ことに電気検層法である。  The technical fields related to the present invention are borehole engineering, petroleum engineering, geophysical exploration, and especially electrical logging.
リ . 冃 示技術  Re. Display technology
従来世界中で行なわれて来た色々 検層作業はいずれも電 極部を検層用電纜で懸垂し ， 試錐孔の中に重力によつて垂下 する方法を採っていた。 したがって電極部が到達する範囲に 限って検層作業が可能であ ]) , 電極部が降下し ければ検層 作業は不能となる。 またこのよ う ¾電極部が降下し得る試錐 孔は当然垂直も し ぐは高角であ ] ， かつ下方向の試錐孔に限 られている。 そのうえ高角下方の試錐孔においても ， 孔心の 屈曲 · 孔壁の変形 · 孔内の流体の性質等の原因で電極部が孔 内に進入し い為に検層作業が不能となる事が極めてしばし ぱ起つた。  Conventionally, various logging operations that have been carried out around the world all used the method of suspending the electrode part with a logging cable and hanging it down in a borehole by gravity. Therefore, logging work can be performed only in the range where the electrode part can reach]), but if the electrode part falls, logging work becomes impossible. The borehole from which the electrode part can descend is naturally vertical or high-angle, and is limited to the borehole in the downward direction. In addition, even in the borehole below the high angle, it is extremely difficult to perform logging work because the electrode does not enter the hole due to the bending of the hole core, deformation of the hole wall, and the properties of the fluid in the hole. For a while.
と ころが現在では試錐孔は高角下方とは限らず一般にあら ゆる方向に掘削されている。 たとえば日本においては 1' 5 0 0 メ ー ト ル程度の水平方向の試錐孔は例が多い。 そして懸垂に 依存する限 ]9 これらの試錐孔には検層作業を全く行えないま ま現在に至っている。 したがって ， すべての試錐孔で検層作 業が必要であるにもかかわらず ， 実際に'は極めて限られた数 の試錐孔について検層作秦が行なわれて来たに過ぎるい。 U R£4 However, boreholes are currently drilled in all directions, not necessarily below high angles. For example, in Japan, there are many examples of horizontal boreholes of about 1'500 meter. As long as they do not depend on suspensions, they have not been able to perform logging work in these boreholes. Therefore, in spite of the need for logging work in all boreholes, in fact, 'logging has only been performed on a very limited number of boreholes. U R £ 4
、 ， P0 D . 発明の開示 ,, P0 D. Disclosure of the Invention
本発明は従来重力に頼って電極部を垂下する方法のもつ問 題点を強制設置する方法で解决したものである。  The present invention has been solved by a method of forcibly installing a problem with a method of hanging an electrode portion depending on gravity conventionally.
すなわち本発明は色々 ¾方向に掘削された試錐孔について ， 掘削用掘 り管を便って孔内の検層開始位置まで電極部を強制 して推進させ ，検層作業を実施できる態勢をと らせる事を目 的と したものであって , 検層作業の準備段階にあたって行 ¾ う電極部の設置作業の方法である。  That is, in the present invention, the drilling hole drilled in various directions is forced to propell the electrode portion to the logging start position in the hole by using the drilling tube for drilling, so that the logging operation can be performed. This is a method of setting up the electrode section at the preparation stage of logging work.
この作業は既存の掘削用掘 り管 · 掘削機および検層装置を 使用 し ， これに加えて本発明のカプセルと 力ブセルの接続具 とをィ吏用する。  This operation uses existing excavation pipes, excavators and logging equipment, and additionally uses the capsule of the present invention and the connection device between the power bussel.
用語の内容 ： .  Term Content:.
ここに云う試錐孔とは掘削機を以 地中に掘った孔を指し ， 直径 3 セ ン チメ ー トル程度の小口径孔から直径 1 メ ー トル以 上におよぶ大口径孔ま でをふくめ ， 孔心はあらゆる角度をも つものである O  The borehole mentioned here refers to a hole dug into the ground by an excavator, and includes a small diameter hole with a diameter of about 3 centimeters to a large diameter hole with a diameter of 1 meter or more. The core is at every angle O
またこ こに云う検層作業とは検層用電纜を有する型の検層 装 ¾を用いて試錐孔について行なう作業であ り ， 地上から岩 石の物性等を比抵抗法 · 誘導電磁法 · 自然電位法 · 音波検層 法 ·放射能検層法 · 温度検層法等の方法によ り電気的に計測 する狭義の検層作業のほかケ—シ ング管を穿孔する弹丸穿孔 作棻および岩石の標:？；を採取するサイ ドウオー ルコアサ ンプ リ ング作業等地上から遠隔操作によ り行 う孔内作業をふく めた広義の意^をもつ 3R£4 O PI Logging work referred to here is a work performed on a borehole using a logging device equipped with a logging cable. The physical properties of rocks from the ground are measured by resistivity method, induction electromagnetic method, Self-potential method, sonic logging method, radioactive logging method, temperature logging method, etc. Rock Mark :? 3R £ 4 O PI with a broad sense, including in-hole work performed remotely from the ground, such as side wall core sampling work for sampling;
0 10 したがってここに云う電極部とは検層装置の端末部であつ て可動部分であ ]? ， 試錐孔内に揷入する電極と , 電極の周辺 に付属していてそれぞれの検層作業のために用いる回路 · 部 品 · 装置 · 付属品 · カバ—等を含めた総称である。 したがつ0 10 Therefore, the electrode part referred to here is the terminal part and the movable part of the logging device], the electrode inserted into the borehole, and the electrode attached to the periphery of the electrode for each logging operation. It is a generic term that includes circuits, components, equipment, accessories, and covers used. According to
5 てそれぞれの計測作業も しく は孔内作業によ って多 くの型式 があ 広義の意味を持つ。 たとえば弾丸穿孔作業の弾丸も電 極部の一部とする。 5 Many types have a broad meaning depending on each measurement work or work inside the hole. For example, bullets for bullet drilling are also part of the electrode section.
カ ブセル ： （第 1 図 ， 第 3 図 ）  Cabsels: (Fig. 1, Fig. 3)
本発明の作業方法で使用するカ プセルは ， 一端が閉じた円 The capsule used in the working method of the present invention is a circle with one end closed.
! 0 筒状を し他端は接続具の内側または外側とはめ込み. · ねじ 込み す ] 合せ等の手段で接続でき ， かつ着脱自在の形態を とっている。 さらに側面には流通孔を持つ。 流通孔は流体が カ ブセルの内外を自由に'流通する作用をする。 カ ブセルの内 部は電極部を内に包みこむ形状と内容積を持ち ， 電極部を保! 0 It has a cylindrical shape, and the other end is fitted with the inside or outside of the connector. · Screw-in] It can be connected by means such as mating and is detachable. Furthermore, it has a circulation hole on the side. The flow holes function to allow the fluid to freely flow inside and outside the capsule. The inside of the capsule has a shape and an internal volume that wraps around the electrode, and holds the electrode.
! 5 護し保持するに耐える強度を持つ。 カ プセルはベークラ イ ト • 塩化ビニール · ブ ラ スチ ッ ク等の化学合成品または木など の非金属材科のみから成る。 ! 5 Strong enough to protect and hold. The capsule consists only of chemically synthesized products such as bakelite • vinyl chloride and plastic or non-metallic materials such as wood.
接続具 ·· （第 2図 ， 第 3図 ）  Connecting device (Figs. 2 and 3)
本発明の作業方法で使用する接続具は金属製で外観は円柱 The fitting used in the working method of the present invention is made of metal and has a cylindrical appearance.
20 状も しく は円筒状をな し， 一端が掘削用掘 ]9管とねじ込みを も って固着でき ， 他端はカ プセルの内側も しく は外側とはめ 込み · ねじ込み · す ]9合せ等の手段を以て装着でき る形状を もつ。 また接続具の側面には検層用電纜が通じる禱状の切れ 込みがある。 そして接続具は試錐孔内で力プセ ルを保持する 20 or cylindrical shape, one end of which can be fixed with a digging drilling] 9 pipe and screwed in, and the other end fitted with the inside or outside of the capsule. It has a shape that can be mounted by means of (1). In addition, there is a 切 れ -shaped notch on the side of the connector, through which the logging cable passes. The fitting then holds the force cell in the borehole
GMPI GMPI
、き? WAT ) に耐える強度を持つものである。 , Come? WAT) It has the strength to endure.
作業プ ロ セス ：  Working process:
本発明の作業方法は次のプロ セスから構成されている。  The working method of the present invention comprises the following processes.
(a) 掘削用掘 り管の先端に接続具をつけ ， この接続具に電 極部を入れたカブセルを装着する。 この時電極都につ ¾がる 検層用電纜を接続具の切れ込みを通す。  (a) Attach a connector to the end of the excavation pipe, and attach a capsule containing the electrode to the connector. At this time, pass the logging cable through the notch of the connector.
(b) 掘削用搌り管の外側に検層用電纜を位置させて ， 力ブ セルと接続具のついた掘削用掘 り管を試錐孔に揷入する。 そ れにつれて検層用電纜も引き込まれて行く。 〔第 4 図 ）  (b) Position the logging cable outside the drilling pipe, and insert the drilling pipe with the power bushing and the connector into the borehole. Along with that, the logging cable is also drawn in. [Fig. 4)
(c) 試錐孔の中で検層作業を予定している位置にカブセル が達" Lた時 ， 掘削用掘 り管を引 くかまたは回耘させてカブセ ルを離脱させる。 （第 5 図）  (c) When the capsule reaches the position where logging work is planned in the borehole, “L” pulls or excavates the excavation pipe to release the capsule. (Fig. 5) )
(d) そして接続具と共にすベての掘削用掘 り管を揚管して から検層用電纜を巻き取り ， カプセルから電極部を抜き出す。 ここで検層作業を開始できる態勢とな り ， 電極都の設置作業 を完了する。 （第 6 図 ） '  (d) Then, lift all the excavation pipes together with the connectors, wind up the logging cable, and extract the electrode from the capsule. At this point, it is ready to start logging work, and the installation work for the electrode city is completed. (Figure 6) ''
効果 ：  Effect:
以上の構成をもつ本発明の作業方法は ，  The working method of the present invention having the above configuration is as follows.
(1) 掘削用掘 り管を接続具と共に揚管した後は孔内に金属製' 品が残ら ので検層作業に影響を与え いと云う効果があ る O (1) After excavation of the excavated pipe with the fittings, metal products remain in the hole, which has the effect of not affecting logging operations.
12) 孔内に力ブセルを残し , 検層作案を終了した段階で再び 検層作棻を繰返す *ができる効果がある。  12) There is an effect that the logging operation can be repeated * at the stage when the logging is completed, leaving the force busel in the hole.
(3i 検 ¾作業終了後 ， 握進を再開する場合には孔内に残って  (After the 3i inspection operation, when the gripping is resumed, it remains in the hole.
OMPI · 、 ， W1PO いるカプセルをビッ 卜で掘 り砕いて掘進する。 したがって力 プセ ルは掘進の妨げとるらるいと云う効果がある o OMPI ·,, W1PO Dig and crush the existing capsule with a bit. Therefore, force cells have the effect of hindering excavation o
利点 ：  Benefits:
本発明の作業方法を用いれば ，  Using the working method of the present invention,
5 (1) 低角度の孔心を持つ試錐孔について検層作業がはじめて 可能に る大き 利点がある。  5 (1) There is a great advantage that logging work can be performed for the first time in a borehole with a low-angle bore.
(2) 高角度の試錐孔において孔内状況が悪い場合 ， たとえば 孔内に僅か ステツ ブゃ泥のプラグがあったり孑 L心が屈曲 し ている場合 ， あるいは泥水の比重が極めて大きい場合 ， 電極 (2) When the borehole condition is poor in a high-angle borehole, for example, when there is a small stepping mud plug in the borehole or when the heart of the mosquito L is bent, or when the specific gravity of the muddy water is extremely large, the electrode
! 0 都の重力による垂下は不能とるる事が多 が ， 掘削用掘 り管 の降管さえ可能であるならば本発明の作業方法で検層作業が 可能とるる利点がある O In many cases, drooping due to gravity in the capital is not possible, but there is an advantage that the logging method can be performed by the working method of the present invention if the downhole of the excavation pipe is possible.
- (3) 高角度の普通の試錐孔では本発明の強制設置の作業方法 は垂下し設置する方法に比軟してや 時間がかかる欠点があ 15 る。 すなわち孔内状況の良い場合は在来の垂下し設置する方 法が便であ り ， 少々孔内状況が悪い場合は本発明の強制設置 の方法が適当であ り着実に実施できる利点がある ， そのため 垂下設置方法を繰返し手ま どる事に比べると結果と して時間 を短縮できる利点がある。 - (3) high in the angle of ordinary borehole working methods of the forced installation of the present invention is Ru disadvantages there 1 5 take Hi軟to and time in a method of hanging installed. In other words, if the conditions inside the hole are good, the conventional hanging method is convenient, and if the conditions inside the hole are a little bad, the forced installation method of the present invention is appropriate and has the advantage that it can be implemented steadily. As a result, there is an advantage that the time can be shortened as a result as compared with the case where the hanging installation method is repeatedly performed.
20 E . 図面の簡単る説明  20 E. Brief description of the drawings
第 1 図はカブセ ノレ の斜視図。  Fig. 1 is a perspective view of the bush.
第 2 図は接続具の斜視図。  Fig. 2 is a perspective view of the connection tool.
m 3 医は試錐孔の縦面図。  m 3 doctor is a longitudinal view of the borehole.
第 4 図は捍入段階 ， 第 5 図は齄脱し揚管中の段階 ， 第 6図 oy.Pi Fig. 4 shows the stage of rod insertion, Fig. 5 shows the stage of unloading and lifting, Fig. 6 oy.Pi
：.. は設置段階のそれぞれの実施態様を示す試錐孔の縦断面図。 (1) ： 試錐孔 ， （2) ： カブセル ， : .. FIG. 3 is a longitudinal sectional view of a borehole showing each embodiment in an installation stage. (1): borehole, (2): Kassel,
(3) ： 電極部 ， （4) ： 接続具 ，  (3): Electrode part, (4): Connector,
(5) : 掘削用掘 り管 ， （6) ： 検層用電纜 ， .  (5): Drilling pipe, (6): Logging cable,
(7) ： 流通孔 ， （8) ： 切れ込み。  (7): Flow hole, (8): Notch.
F . 発明を実施するための最良の形態  F. BEST MODE FOR CARRYING OUT THE INVENTION
(1) 検層作業の開始位置は出来れば孔底を選ぶべきであ ， そのため力ブセルの先端に突起をつけ孔底に力ブセルを到達 させ掘削用掘り管を少々回転させる事で力ブセルが離脱し易 ■( な o  (1) The starting position of the logging operation should be selected at the bottom of the hole if possible. For this reason, a projection is provided at the tip of the force busel, the force busel reaches the bottom of the hole, and the drilling pipe for drilling is rotated slightly to reduce the force busel. Easy to leave ■ (o
(2) - 試錐孔は高角上方の試錐孔を除いた低角も しくは高角 下方の試錐孔に本発明の作業方法は適用される。 ま た孔心が 直線とは限らず湾曲 して る筝はさ しっかえ無い。  (2)-For the borehole, the working method of the present invention is applied to the borehole of the low angle or the lower side of the high angle excluding the borehole of the upper angle. In addition, a koto whose core is not necessarily straight but curved is inevitable.
(3) カブセルの材質は出来れば化学合成材科がよ く ， 検層 作業の種類に応じた形態をと らせる事ができかつ安価である。 (3) As for the material of the capsule, the chemical synthetic material department is preferred if possible, and it is possible to take the form according to the type of logging work and it is inexpensive.
G . 産業上の利用可能性 G. Industrial applicability
(a) 本発明の作業方法は石油および天然ガス の為の試錐孔 に利用できる。  (a) The working method of the present invention can be used for boreholes for oil and natural gas.
たとえば方位掘削の深掘井で次第に孔心の角度が低角と る場合に有 ¾である。 油層やガス層は多く の場合低角の都分 にあるから ， 重力による電極都の垂下はこの咅::分について困 難で るか不可能であった C すなわち知 ¾が不充分のま ま で あつたが本作業方法によれば検層が可能と る。 するわち探 g井に限らず開発井につ ても検層作業を行る う》で i 床附  This is useful, for example, in the case of deep boreholes with directional drilling, where the angle of the hole core gradually becomes lower. Since the oil layer and gas layer are often located in low-angle areas, it is difficult or impossible for the electrode city to drop due to gravity C, that is, the knowledge is insufficient. However, according to this work method, logging is possible. Perform logging work not only on g wells but also on development wells >>
' Ο.' ΡΙ 'Ο.' ΡΙ
0 、 0 ,
, . T 近の細部の油層の変化を知る事ができる。 ,. T You can know the change of the oil layer in the nearby details.
また掘削用掘 ]9管は降管できるが孔内から溢出する流体の 圧力の為に重力によ り垂下する電極部が降下しるい場合に石 油 · 天然ガスの掘削でしばしば遭遇するが ， 本発明の作業方 法を適用すれば'電極都を溢出部の下に設置する事が可能と ¾ Ό O  Drilling excavation] can be used for drilling of oil and natural gas when the electrode part, which can drop down due to gravity due to the pressure of the fluid overflowing from the hole, can be dropped. By applying the working method of the present invention, it is possible to install the electrode city below the overflow area.
(b) 本作業方法は坑道内の試錐孔に検層作業を可能 ら し め地質を連続して調べる事のほかに危険防止 ·保安に役立つ。 (b) This work method will enable logging work in boreholes in the tunnels and continuously check the geology, as well as help prevent danger and ensure security.
たとえば ト ン ネ ル掘削等土木工事のための坑道内の試錐孔 は孔心が低角る斜方向も しくは水平方向のものが多い。 こ の 場合従来は検層不能であったが ， 本発明の作業方法で可能と なる ο  For example, boreholes in tunnels for civil engineering work such as tunnel excavation are often inclined or horizontal with a low core. In this case, logging was not possible in the past, but it becomes possible with the working method of the present invention.
また炭鉱等のガス抜き孔に応用できる。 するわち炭鉱でガ スを予め検知する必袅のある場合 , 孔心の低角る試錐孔を掘 る事が多いが検層作業を行な う事によ り水またはガスに飽和 されている地層を検知できる。  It can also be applied to vent holes in coal mines. In other words, when it is necessary to detect gas in a coal mine in advance, a borehole with a low angle is often drilled, but it is saturated with water or gas by logging work. Layer can be detected.
(C) 坑道以外の土木作業用試 ^錐 ， こ とに低角の試錐孔に ついて応用できる。 . (C) Applicable to boreholes for civil engineering work other than tunnels, especially for low-angle boreholes. .
たとえばダム工事には水平方向等の多く の低角の試錐孔を 掘削するが ， オー ルコア リ ン グの方法で欠除する知讒を本発 明の作業方法によって得られる。  For example, many low-angle boreholes, such as those in the horizontal direction, are excavated for dam construction, but the allo-ring method can be used to obtain the insults of the present invention.
OMPI WIPO" OMPI WIPO "

Claims

請 求 の 範 囲 The scope of the claims
1. 試錐孔 (1)の検層作業にあた ， カ プセル (2)に入れた電極 部 (3)を接続具 (4)を介して掘削用掘り管 (5)に装着し試錐孔 (1)に 揷入する。 次.'に力ブセル (2)を残し ， 接続具 (4)のついた掘削用 掘])管 (5)を引き揚げた後さらに検層用電纜 (6)を卷き電極部 (3) が力ブセル (2)から抜け出る と検層作業の開始の態勢をとる電 極都 (3)の孔内設置作業方法。  1. In the logging work of the borehole (1), the electrode part (3) placed in the capsule (2) was attached to the drilling tube (5) via the connector (4), and the borehole ( Enter 1). Next, the force busel (2) is left and the drilling digging with the connector (4)]) After the tube (5) is pulled up, the logging cable (6) is further wound and the electrode (3) is wound. A method of installation in the borehole of the electrode city (3) that prepares for logging work when it exits the force busel (2).
2. —端が閉じ他端がはめ込み · ねじ込み .す 合せ等の手 段で接続具 (4)に装着され ， かつ着脱自在であ り ， 側面に流通 孔 (7)をもつ非金属製円筒状の力プセル (2)を用いる請求の範囲 第 1項記載の電極部 (3)の孔内設置作業方法。  2. —The end is closed and the other end is fitted and screwed in. It is attached to the connector (4) by means such as fitting, is detachable, and has a non-metallic cylindrical shape with a flow hole (7) on the side. 2. A method for installing an electrode part (3) in a hole according to claim 1, wherein the force part (2) is used.
3. 掘削用掘り管 (5)に装着可能であ り検層用電纜 (6)を通す切 れ込み (8)のある金属製接続具 (4)を用いて行な う請求の範囲第 2項記載の作業方法。  3. A metal fitting (4) that can be attached to the excavation pipe (5) and has a cut (8) through which the logging cable (6) passes, the second claim. Working method described in section.
O PI O PI
. WIPO  . WIPO
PCT/JP1979/000156 1979-06-19 1979-06-19 Method of installing electrode unit for bed detection WO1980002878A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1979/000156 WO1980002878A1 (en) 1979-06-19 1979-06-19 Method of installing electrode unit for bed detection

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PCT/JP1979/000156 WO1980002878A1 (en) 1979-06-19 1979-06-19 Method of installing electrode unit for bed detection
WOJP79/00156 1979-06-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505841Y1 (en) * 1970-09-25 1975-02-19
JPS5213762B2 (en) * 1974-01-21 1977-04-16
JPS5328480A (en) * 1976-08-27 1978-03-16 Kobe Steel Ltd Measuring probe for sublance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505841Y1 (en) * 1970-09-25 1975-02-19
JPS5213762B2 (en) * 1974-01-21 1977-04-16
JPS5328480A (en) * 1976-08-27 1978-03-16 Kobe Steel Ltd Measuring probe for sublance

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