JPS6149094A - Automatic jet guiding apparatus of geothermal well - Google Patents
Automatic jet guiding apparatus of geothermal wellInfo
- Publication number
- JPS6149094A JPS6149094A JP17134284A JP17134284A JPS6149094A JP S6149094 A JPS6149094 A JP S6149094A JP 17134284 A JP17134284 A JP 17134284A JP 17134284 A JP17134284 A JP 17134284A JP S6149094 A JPS6149094 A JP S6149094A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- casing pipe
- artesian
- injection
- geothermal
- 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
Links
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Jet Pumps And Other Pumps (AREA)
- Soil Working Implements (AREA)
- Paper (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、特に地熱発電等に利用する地下の地熱流体を
噴出させる地熱井の自噴誘導装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an artesian injection induction device for a geothermal well that spouts underground geothermal fluid used for geothermal power generation and the like.
［背景技術とその問題点］
一般に、地熱発電は、地下にあるマグマにより地下水等
が加熱されて貯溜している貯留層から、蒸気及び熱水に
若干の塩分を含んだ流体を地熱井を通して噴出させ、そ
の流体を地上の坑口装置を経て気水分離装置へ送り、こ
こで熱水、塩分を除去し、残りの高温蒸気をタービンに
導き、このタービンで駆動した発電機により電力を発生
させるものである。[Background technology and its problems] In general, geothermal power generation involves ejecting fluid containing steam and hot water with some salt through a geothermal well from a reservoir where underground magma heats groundwater and stores it. The fluid is sent to a steam-water separator through an above-ground wellhead device, where hot water and salt are removed, and the remaining high-temperature steam is guided to a turbine, which generates electricity using a generator driven by the turbine. It is.
従って、地熱発電を行なうためには地熱井を掘削して前
記貯溜層から地熱流体を噴出させる必要があるが、地熱
井を所定深さまで掘っても流体が噴出しない場合には、
人工的な手段により噴出を誘発させることが必要である
。Therefore, in order to generate geothermal power generation, it is necessary to drill a geothermal well and blow out geothermal fluid from the reservoir layer. However, if the fluid does not blow out even after digging the geothermal well to a predetermined depth,
It is necessary to induce the eruption by artificial means.
その誘発手段として、従来は、ベーラ−（逆１Ｆ弁付き
おもり）を用いた断続的熱水汲み上げによる方式、又は
コンプレッサによる加圧、脱圧法等が行なわれていた。Conventionally, methods for inducing this phenomenon include intermittent pumping of hot water using a baler (weight with a reverse 1F valve), pressurization and depressurization using a compressor, and the like.
しかし従来のものでは、自噴誘導時に各種の装置、管等
をやぐら等を利用して坑内へ垂下する必要があり、自噴
誘導作業に手間がかかる欠点があった。また、坑井内に
管を垂下して行うため、噴出流体が坑井と自噴誘導用管
との間から飛散する欠点があった。However, the conventional method had the disadvantage that various devices, pipes, etc. had to be hung down into the mine using a tower or the like when guiding the self-spray, which required time and effort to guide the self-spray. In addition, since the pipe is suspended into the well, there is a drawback that the ejected fluid scatters from between the well and the artesian injection pipe.
この為、安全性および作業短縮化の要請から短時間に自
噴誘導が行なえる自噴誘導装置が望まれていた。For this reason, there has been a demand for a self-injection induction device that can perform self-injection guidance in a short period of time in view of safety and shortening of work.
［発明の目的］
本発明の目的は、地下の流体貯溜層から地熱流体を噴出
させる際、特別な機器を準備する必要がなく、短時間に
噴出誘導作業を実施できる地熱井の自噴誘導装置を提供
することにある。[Object of the Invention] The object of the present invention is to provide an artesian gushing guidance device for a geothermal well that can perform gushing guidance work in a short time without the need to prepare special equipment when spouting geothermal fluid from an underground fluid reservoir. It is about providing.
［問題点を解決するための手段および作用］本発明は、
地熱井に自噴誘導管を一体に設け、その自噴誘導管の一
端を地上に設置したニアコンプレッサ等の圧縮空気源に
接続することにより、圧縮空気源から地熱井内に送られ
る圧縮空気のエアリフト作用によって自噴を誘導するよ
うにし、前記目的を達成しようとするものである。[Means and effects for solving the problems] The present invention has the following features:
By installing an artesian induction pipe integrally in a geothermal well and connecting one end of the artesian induction pipe to a compressed air source such as a near compressor installed on the ground, the air lift effect of the compressed air sent from the compressed air source into the geothermal well The purpose is to induce self-injection to achieve the above object.
［実施例］ 以下、本発明の実施例を図面に基づいて説明する。[Example] Embodiments of the present invention will be described below based on the drawings.
第１図は本発明の自噴誘導装置を用いた地熱井の一実施
例の縦断面図を示すもので、この図において、地熱井は
、比較的地上に近い位置にあるケーシングパイプ部１と
、このケーシングパイプ部ｌの下方で、地熱波体貯溜層
へ至る裸坑部２とからなり、その裸坑部２は、硬質な岩
石等からなり、地層の崩壊等のおそれがないため、ケー
シングパイプ等を挿入しないで掘削した構成そのままに
なっている。FIG. 1 shows a longitudinal cross-sectional view of one embodiment of a geothermal well using the artesian injection induction device of the present invention. In this figure, the geothermal well has a casing pipe section 1 located relatively close to the ground; Below this casing pipe part l, there is a bare pit part 2 leading to the geothermal wave body reservoir, and the bare pit part 2 is made of hard rock, etc., and there is no risk of collapse of the geological layer, so the casing pipe The configuration remains as it was when excavated without inserting any other items.
前記ケーシングパイプ部ｌは、複数の直径の異なるパイ
プが略同心円状に配置されて構成され、具体的には、前
記流体貯溜層から地熱流体を地上に導く内側ケーシング
パイプとしての仕上ケーシングパイプ３と、その仕上ケ
ーシングパイプ３の上部保護をするとともに、仕上げケ
ーシングパイプ３と適宜なセントラライザーで所定間隔
を保持された保護ケーシングパイプ４と、この保護ケー
シングパイプ４の外方に配置された地表面近傍の地表ケ
ーシングパイプ５とを有し、前記仕上げケーシングパイ
プ３と保護ケーシングパイプ４の間には自噴誘導管６を
設けられ、更に、各ケーシングパイプ間３，４間、４，
５間及びケーシングパイプ３，４．５と地層７間にセメ
ント８を打設した構成である。The casing pipe section l is composed of a plurality of pipes having different diameters arranged approximately concentrically, and specifically includes a finished casing pipe 3 as an inner casing pipe that guides geothermal fluid from the fluid reservoir to the ground. , a protective casing pipe 4 that protects the upper part of the finished casing pipe 3 and is maintained at a predetermined distance from the finished casing pipe 3 by an appropriate centralizer, and a protective casing pipe 4 that is placed outside of this protective casing pipe 4 near the ground surface. A surface casing pipe 5 is provided between the finished casing pipe 3 and the protective casing pipe 4, and an artesian injection guide pipe 6 is provided between each casing pipe 3, 4, 4,
5 and between the casing pipes 3, 4.5 and the stratum 7, cement 8 is placed.
上記什」二げケーシングパイプ３は、例えば直径が９５
７８ インチ、長さが１６００ｍのもの〒、１本のパイ
プでもよいが、図示例は上下２木のパイプとして上側の
仕上げケーシングパイプ３Ａの下端を下側の仕上げケー
シングパイプ３Ｂの上端に嵌合させたものである。前記
保護ケーシングパイプ４は、例えば直径が１３３／８
インチ、長さが９００ｍのもので、地表に突出する上
端部には口元管９を介して主弁ｌＯが連設されている。The above-mentioned second casing pipe 3 has a diameter of, for example, 95 mm.
78 inches long and 1,600 m in length.Although it may be one pipe, the illustrated example has two upper and lower pipes, with the lower end of the upper finished casing pipe 3A fitting into the upper end of the lower finished casing pipe 3B. It is something that The protective casing pipe 4 has a diameter of 133/8, for example.
inch and 900 m in length, and a main valve lO is connected to the upper end protruding above the ground via a mouth pipe 9.
前記地表ケーシングパイプ５は、例えば直径が２０イン
チ、長さが７０ｍのもので、特に地表付近は土砂等がく
ずれやすいので、これを防止するためのパイプである。The surface casing pipe 5 has a diameter of, for example, 20 inches and a length of 70 m, and is used to prevent earth and sand from collapsing especially near the surface of the earth.
前記自噴誘導管６は、一端を地上に設置した圧縮空気源
としてのニアコンプレッサ１１に接続され、他端はＬ型
に折曲げられ、この折曲げ部６Ａは前記上側の什」二げ
ケーシングパイプ３Ａに形成された小孔１２を介して仕
上げケーシングパイプ３Ａ内に開口されている。このと
き、仕上げケーシングパイプ３Ａ内に開口される自噴誘
導管６の他端位置はエアリフト作用による自噴による自
噴をうながすのに必要な深さとされている。One end of the self-injection guide pipe 6 is connected to a near compressor 11 as a compressed air source installed on the ground, and the other end is bent into an L shape, and this bent portion 6A is connected to the upper casing pipe. It opens into the finished casing pipe 3A through a small hole 12 formed in the finished casing pipe 3A. At this time, the other end position of the self-injection guide pipe 6 opened in the finished casing pipe 3A is set to a depth necessary to promote self-injection by self-injection due to the air lift effect.
上記の構成からなる地熱井を形成する場合、例えば以下
の掘削手段により行なう。When forming a geothermal well having the above configuration, for example, the following excavation method is used.
地表から地表ケーシングパイプ５を挿入するに見合った
坑井を掘り、地表ケーシングパイプ５を挿入し、次にこ
の掘削した穴底から更にその穴より小さい径の穴を掘っ
て保護ケーシングパイプ４を挿入する。更に、この保護
ケーシングパイプ４を挿入した穴底からその穴より小さ
い径の穴を掘って仕上げケーシングパイプ３Ａ、３Ｂを
挿入する。ついで、セメント８を各ケーシングパイプ３
Ｂ、４間、４．５間及び各ケーシングパイプ３Ｂ、４．
５と地層７間に打設し、セメント８を硬化させた後、こ
の状態において、ケーシングパイプ部！より下方の裸坑
部２を掘削する。ここで、予め什りげケーシングパイプ
３Ａの外側に自噴誘導管６を不図示のバンド、その他の
固着具で取付けておいて保護ケーシングパイプ４の内側
に位置させる。その後、セメント８をケーシングパイプ
３Ａと４との間に打設し、セメント８の硬化ｌｉ＆、坑
口より自噴誘導管６の一端を取出し、地上のニアコンプ
レッサ１１に接続する。そして、一定深さまで掘削して
も地熱流体を噴出しない場合は、或いは掘削完了後、噴
出を必要とする場合は地上のニアコンプレッサ１１から
圧縮空気を自噴誘導管６を介して什−にげケーシングパ
イプ３内に入れて自噴を誘導させるものである。A well suitable for inserting the surface casing pipe 5 is dug from the ground surface, the surface casing pipe 5 is inserted, and then a hole with a diameter smaller than that hole is further dug from the bottom of this excavated hole and the protective casing pipe 4 is inserted. do. Further, from the bottom of the hole into which the protective casing pipe 4 was inserted, a hole with a diameter smaller than that hole is dug, and the finished casing pipes 3A and 3B are inserted. Next, apply cement 8 to each casing pipe 3.
B, 4 spaces, 4.5 spaces and each casing pipe 3B, 4.
5 and the stratum 7, and after hardening the cement 8, in this state, the casing pipe part! A lower bare pit portion 2 is excavated. Here, the self-injection guide pipe 6 is attached in advance to the outside of the retaining casing pipe 3A using a band or other fixing device (not shown), and is positioned inside the protective casing pipe 4. Thereafter, cement 8 is placed between the casing pipes 3A and 4, and after the cement 8 has hardened, one end of the artesian injection pipe 6 is taken out from the wellhead and connected to the near compressor 11 on the ground. If geothermal fluid is not spouted even after excavation to a certain depth, or if spouting is required after excavation is completed, compressed air is supplied from the near compressor 11 on the ground through the artesian guide pipe 6 to the casing. It is inserted into the pipe 3 to induce self-injection.
上述のような本実施例によれば、地熱井の内側ケーシン
グである仕−１−げケーシング３に自噴誘導管６を一体
に設け、その自噴誘導管６の一端を地」二に設置したニ
アコンプレッサ１１に接続したことにより、自噴誘導に
際し、自噴誘導に必要な各種装置、自噴誘導管をやぐら
等から坑内へ垂下させる手間を必要とせず、短時間に自
噴誘導作業ができる効果がある。また、従来のものに比
べて、噴気に達した時に仕上げケーシング３の坑口から
噴出流体が広範囲にわたって飛散することがなく、安全
であるという効果がある。According to this embodiment as described above, the artesian guide pipe 6 is integrally provided in the casing 3, which is the inner casing of the geothermal well, and one end of the artesian guide pipe 6 is connected to the By connecting to the compressor 11, there is an effect that the self-spray guidance work can be carried out in a short time without the need for various devices necessary for self-spray guidance and the effort of hanging the self-spray induction pipe from a tower etc. into the mine. Furthermore, compared to the conventional method, the ejected fluid does not scatter over a wide range from the well mouth of the finishing casing 3 when it reaches the fumarole, and is therefore safer.
なお、前記実施例においては、自噴誘導管６の一端を直
接ニアコンプレッサ１１に接続したが、本発明はこれに
限定されるものではなく、ニアコンプレッサ１１に接続
されたエアタンクに接続するもの等でもよく、要するに
圧縮空気源に接続されていればよい。In the above embodiment, one end of the self-injection guide pipe 6 was connected directly to the near compressor 11, but the present invention is not limited to this, and may be connected to an air tank connected to the near compressor 11. In short, it only needs to be connected to a compressed air source.
［発明の効果］
本発明は、地下の流体貯溜層から地熱流体を噴出させる
際、特別な機器を準備する必要がなく、短時間に噴出誘
導作業を実施できる地熱井の自噴誘導装置を提供できる
という効果がある。[Effects of the Invention] The present invention can provide an artesian gushing guidance device for a geothermal well that can perform gushing guidance work in a short time without the need to prepare special equipment when gushing geothermal fluid from an underground fluid reservoir. There is an effect.
第１図は本発明に係る自噴誘導装置の一実施例を適用し
た地熱井の縦断断面図、第２図は第１のｎ −ｎ線に沿
う矢視断面図である。
１・・・ケージング部、２・・・裸坑部、３・・・内側
ケーシングとしての仕上げケーシングパイプ、４・・・
外側ケーシングとしての保護ケーシングパイプ、６・・
・自噴誘導管、８・・・セメント、１１・・・ニアコン
プレッサ。FIG. 1 is a vertical sectional view of a geothermal well to which an embodiment of the artesian injection induction device according to the present invention is applied, and FIG. 2 is a sectional view taken along the first line nn. 1... Caging part, 2... Bare shaft part, 3... Finished casing pipe as inner casing, 4...
Protective casing pipe as outer casing, 6.
- Self-injection guide pipe, 8...cement, 11...near compressor.
Claims (1)
ングパイプと、この内側ケーシングの外側に略同心円状
に配置された外側ケーシングパイプと、前記両ケーシン
グパイプ間に設けられ一端を地上に引出されるとともに
他端を内側ケーシングパイプの所定深さ位置に開口され
た自噴誘導管と、この自噴誘導管に接続された圧縮空気
源とを具備したことを特徴とする地熱井の自噴誘導装置
。(1) An inner casing pipe inserted underground to guide geothermal fluid to the ground, an outer casing pipe arranged approximately concentrically outside the inner casing, and an outer casing pipe provided between the two casing pipes with one end pulled out above the ground. 1. An artesian injection induction device for a geothermal well, comprising an artesian injection pipe whose other end is opened at a predetermined depth position of an inner casing pipe, and a compressed air source connected to the artesian injection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17134284A JPS6149094A (en) | 1984-08-17 | 1984-08-17 | Automatic jet guiding apparatus of geothermal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17134284A JPS6149094A (en) | 1984-08-17 | 1984-08-17 | Automatic jet guiding apparatus of geothermal well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6149094A true JPS6149094A (en) | 1986-03-10 |
| JPH0368998B2 JPH0368998B2 (en) | 1991-10-30 |
Family
ID=15921435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17134284A Granted JPS6149094A (en) | 1984-08-17 | 1984-08-17 | Automatic jet guiding apparatus of geothermal well |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6149094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213689A (en) * | 1985-07-12 | 1987-01-22 | 坂本 三蔵 | Boring method and casing pipe |
| WO2019234808A1 (en) * | 2018-06-05 | 2019-12-12 | 株式会社アサヒテクノ | Water pump system, water pump pipe, hydroelectric power generation system, and water feed system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542882A (en) * | 1977-06-15 | 1979-01-10 | Matsushita Electric Works Ltd | Hard case |
-
1984
- 1984-08-17 JP JP17134284A patent/JPS6149094A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542882A (en) * | 1977-06-15 | 1979-01-10 | Matsushita Electric Works Ltd | Hard case |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213689A (en) * | 1985-07-12 | 1987-01-22 | 坂本 三蔵 | Boring method and casing pipe |
| JPH0344623B2 (en) * | 1985-07-12 | 1991-07-08 | Sanzo Sakamoto | |
| WO2019234808A1 (en) * | 2018-06-05 | 2019-12-12 | 株式会社アサヒテクノ | Water pump system, water pump pipe, hydroelectric power generation system, and water feed system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0368998B2 (en) | 1991-10-30 |
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