JPH073254A - Composition for drilling fluid - Google Patents

Composition for drilling fluid

Info

Publication number
JPH073254A
JPH073254A JP2690191A JP2690191A JPH073254A JP H073254 A JPH073254 A JP H073254A JP 2690191 A JP2690191 A JP 2690191A JP 2690191 A JP2690191 A JP 2690191A JP H073254 A JPH073254 A JP H073254A
Authority
JP
Japan
Prior art keywords
composition
drilling fluid
seawater
pts
component
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
JP2690191A
Other languages
Japanese (ja)
Other versions
JP2957293B2 (en
Inventor
Noboru Narisawa
暢 成沢
Makoto Kimura
誠 木村
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.)
Telnite Co Ltd
Original Assignee
Telnite 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 Telnite Co Ltd filed Critical Telnite Co Ltd
Priority to JP2690191A priority Critical patent/JP2957293B2/en
Publication of JPH073254A publication Critical patent/JPH073254A/en
Application granted granted Critical
Publication of JP2957293B2 publication Critical patent/JP2957293B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the subject composition, excellent in thickening effects and suitability for well conditions and useful for drilling for petroleum, natural gas, civil engineering, etc., by kneading bentonite with a specific (co)polymer, zeolites, a dispersing agent and inorganic salts and powdering the resultant kneaded mixture. CONSTITUTION:The objective composition is obtained by uniformly kneading (A) bentonite with (B) CMC, (C) a polyacrylic acid-based (co)polymer, (D) zeolites, (E) a dispersing agent and (F) inorganic salts and powdering the resultant kneaded mixture. Furthermore, in this composition, the blending ratio of the respective components based on 100 pts.wt. component (A) is 15-25 pts.wt. component (B), 3-10 pts.wt. component (C), 20-35 pts.wt. component (D), 3-10 pts.wt. component (E) and 5-15 pts.wt. component (F).

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、石油、天然ガス、土
木、鉱山などの掘削において、海水を溶媒とする掘削流
体に添加する掘削流体用組成物に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition for drilling fluid which is added to a drilling fluid containing seawater as a solvent in drilling petroleum, natural gas, civil engineering, mines and the like.

【0002】[0002]

【従来の技術と発明が解決しようとする課題】従来から
石油、天然ガス、土木、鉱山などの掘削の際に用いる掘
削流体は、清水にベントナイトを主材として、カルボキ
シメチルセルロース、分散剤、pH調整剤、必要に応じて
潤滑剤や逸泥防止剤その他の必要な添加剤等を適宜に添
加して、掘削坑井の状況に適合するように作液されてい
る。
BACKGROUND OF THE INVENTION Conventionally, drilling fluids used for drilling petroleum, natural gas, civil engineering, mines, etc. are mainly composed of bentonite in fresh water, carboxymethyl cellulose, a dispersant, and a pH adjuster. It is prepared to be suitable for the situation of the drilling well by appropriately adding a lubricant, a lubricant, a mudguard, and other necessary additives as necessary.

【0003】これらの掘削流体は、海上あるいは海岸で
の掘削においては、海水が地下水等として掘削流体に混
入し、掘削流体を容易に汚染するため、掘削流体として
の物性を維持することができなくなる。
In the case of drilling on the sea or on the coast, these drilling fluids mix seawater as groundwater into the drilling fluid and easily contaminate the drilling fluid, so that the physical properties of the drilling fluid cannot be maintained. .

【0004】また、従来からの海水を用いた掘削流体と
しては、掘削流体用添加剤、例えばベントナイト、カル
ボキシメチルセルロース等を予め清水に懸濁させ、充分
に掘削流体用添加剤を膨潤させた後に、海水で割る方式
によって、海水を用いた掘削流体を作液するものが知ら
れている。
Further, as a conventional drilling fluid using seawater, additives for drilling fluid, for example, bentonite, carboxymethyl cellulose, etc., are suspended in fresh water in advance, and after the additives for drilling fluid are sufficiently swelled, It is known to produce a drilling fluid using seawater by the method of dividing with seawater.

【0005】この海水で割る方式の掘削流体にあって
は、掘削流体としての物性を得るために、多量の掘削流
体の材料を添加しなければ、掘削坑井の状況に充分に適
合した特性を持った掘削流体を維持することは出来ない
等の欠点がある。また、海水を直接に掘削流体の溶媒と
して用いて、従来の掘削流体用材料を添加混合しても、
坑井の状況に適合した特性を持った掘削流体は得ること
が出来ない。
In the drilling fluid of the method of dividing by seawater, in order to obtain the physical properties as the drilling fluid, unless a large amount of the drilling fluid material is added, the characteristics well suited to the situation of the drilling well are obtained. There are drawbacks such as not being able to maintain the drilling fluid that you have. Also, using seawater directly as a solvent for the drilling fluid and adding and mixing conventional drilling fluid materials,
It is not possible to obtain a drilling fluid with characteristics suitable for the well conditions.

【0006】これは、従来から用いられているベントナ
イトやカルボキシメチルセルロース、その他の掘削流体
添加剤が、清水を溶媒とした掘削流体を対象とした材料
であったため、海水中では充分に膨潤せず、増粘効果も
期待できず、坑井の状況に適合する掘削流体の特性を得
ることが出来ないためである。
This is because bentonite, carboxymethyl cellulose, and other drilling fluid additives that have been conventionally used are materials intended for drilling fluids using fresh water as a solvent, and therefore do not swell sufficiently in seawater. This is because the thickening effect cannot be expected and the characteristics of the drilling fluid suitable for the condition of the well cannot be obtained.

【0007】[0007]

【課題を解決するための手段】そこで本発明者らは、海
水においても容易に懸濁、膨潤し、増粘効果が期待で
き、坑井の状況に適合した特性を有する、海水を用いた
掘削流体を容易に得るための掘削流体用組成物である本
発明品を発明するに至った。
Therefore, the inventors of the present invention have been able to easily suspend and swell in seawater, expect a thickening effect, and have characteristics suitable for the situation of a well, and excavation using seawater. The present invention has been invented, which is a composition for drilling fluid for easily obtaining a fluid.

【0008】すなわち、本発明の要旨は、ベントナイ
ト、カルボキシメチルセルロース、ポリアクリル酸系重
合体または共重合体、ゼオライト類、分散剤そして無機
塩類を均一に混練し、粉末化したことを特徴とする掘削
流体用組成物にある。
That is, the gist of the present invention is that the bentonite, carboxymethyl cellulose, polyacrylic acid-based polymer or copolymer, zeolites, dispersants and inorganic salts are uniformly kneaded and powdered. In a fluid composition.

【0009】本発明の組成物は、ベントナイト、カルボ
キシメチルセルロース、ポリアクリル酸系重合体または
共重合体で増粘効果の高いもの、ゼオライト類の無機担
体、分散剤および無機塩類からなる組成物である。
The composition of the present invention is a composition comprising bentonite, carboxymethyl cellulose, polyacrylic acid type polymer or copolymer having a high thickening effect, an inorganic carrier for zeolites, a dispersant and inorganic salts. .

【0010】具体的には、ベントナイト 100重量部に対
してカルボキシメチルセルロース15〜25重量部、ポリア
クリル酸系重合体または共重合体3〜10重量部、ゼオラ
イト類20〜35重量部、分散剤3〜10重量部そして無機塩
類5〜15重量部を充分に均一に混練りし、粉末化した組
成物である。
Specifically, 15 to 25 parts by weight of carboxymethyl cellulose, 3 to 10 parts by weight of a polyacrylic acid type polymer or copolymer, 20 to 35 parts by weight of zeolites, and 3 parts of a dispersant are used with respect to 100 parts by weight of bentonite. -10 parts by weight and 5 to 15 parts by weight of inorganic salts are kneaded sufficiently uniformly to give a powdered composition.

【0011】ここに用いたベントナイトは、ナトリウム
型、カルシウム型のモンモリロナイトを主成分とした粘
土鉱物である。この粘土鉱物は、ベントナイトに代表さ
れるものであるが、本発明には、水膨潤性の特性のある
粘土鉱物であれば使用することができる。
The bentonite used here is a clay mineral mainly composed of sodium type and calcium type montmorillonite. This clay mineral is typified by bentonite, but any clay mineral having a water-swelling property can be used in the present invention.

【0012】カルボキシメチルセルロースにあっては、
エーテル化度が 0.5〜1.6 、好ましくは 0.9〜1.2 で、
粘性が 250cp以上、好ましくは 1,000〜3,000cp のもの
であれば適用できる。
In carboxymethyl cellulose,
An etherification degree of 0.5 to 1.6, preferably 0.9 to 1.2,
Applicable if the viscosity is 250 cp or more, preferably 1,000 to 3,000 cp.

【0013】ポリアクリル酸系重合体または共重合体に
あっては、(メタ)アクリルアミド、(メタ)アクリル
酸(塩)、スチレンスルホン酸ソーダ、ビニルスルホン
酸ソーダ、無水マレイン酸から選ばれた1種以上3種以
内の単量体が組成中の90%以上を占める分子量 600万以
上、好ましくは 800〜1,200 万である重合体または共重
合体であり、これらの重合体または共重合体を1種また
は2種以上を併用して用いることができる。当該重合体
または共重合体は、粉体または逆相エマルジョン型にし
たもののどちらでも使用することができる。
In the polyacrylic acid type polymer or copolymer, 1 selected from (meth) acrylamide, (meth) acrylic acid (salt), sodium styrene sulfonate, sodium vinyl sulfonate, and maleic anhydride. It is a polymer or copolymer having a molecular weight of 6 million or more, preferably 8 to 12 million, in which 90% or more of the monomers account for 90% or more of the composition. One of these polymers or copolymers is used. They may be used alone or in combination of two or more. The polymer or copolymer can be used in the form of powder or reverse phase emulsion type.

【0014】ゼオライト類にあっては、合成ゼオライト
および天然ゼオライト等のいずれをも用いることができ
る。ゼオライトは、その構造、化学組成によって、多く
の結晶型があり、特性もそれぞれ異なることが知られて
いるが、本発明の組成物には、これらのゼオライトのい
ずれもが使用できる。
As the zeolites, both synthetic zeolites and natural zeolites can be used. It is known that zeolite has many crystal forms and different properties depending on its structure and chemical composition, and any of these zeolites can be used in the composition of the present invention.

【0015】分散剤としては、分子量 2,500〜40,000、
好ましくは 4,000〜20,000のアクリル酸系ポリマー、た
とえば、ポリ(メタ)アクリル酸ソーダ、(メタ)アク
リル酸ソーダ・(メタ)アクリル酸エステル共重合体、
(メタ)アクリル酸ソーダ・スチレンスルホン酸ソーダ
共重合体、スチレンスルホン酸ソーダ・無水マレイン酸
共重合体などがある。また、その他、リグニンスルホン
酸ソーダ、ニトロフミン酸及び天然フミン酸のナトリウ
ム塩、などがある。これらの分散剤を1種または2種以
上を併用して用いることができる。
The dispersant has a molecular weight of 2,500 to 40,000,
Preferably 4,000 to 20,000 acrylic acid-based polymers, for example, poly (meth) acrylic acid soda, (meth) acrylic acid soda / (meth) acrylic acid ester copolymer,
Examples thereof include sodium (meth) acrylate / sodium styrene sulfonate copolymers, sodium styrene sulfonate / maleic anhydride copolymers, and the like. In addition, sodium lignin sulfonate, sodium nitrohumic acid and natural humic acid, and the like are also included. These dispersants can be used alone or in combination of two or more.

【0016】無機塩類については、(重)炭酸アルカリ
金属塩及びアンモニウム塩、(重)硫酸アルカリ金属塩
及びアンモニウム塩、縮合りん酸アルカリ金属塩、アル
ミン酸アルカリ金属塩、などがある。また上述の無機塩
類2種以上を併用しても良い。
Examples of the inorganic salts include (bi) carbonic acid alkali metal salts and ammonium salts, (bi) sulfuric acid alkali metal salts and ammonium salts, condensed phosphoric acid alkali metal salts, and aluminate alkali metal salts. Moreover, you may use together 2 or more types of said inorganic salt.

【0017】これらの物質を均一に混練りして得られる
本発明の組成物 2.0〜5.0 重量部を、塩濃度が10,000pp
m 以上の海水 100重量部に対して添加し、掘削現場で通
常使用されている撹拌機で撹拌するだけで、容易に15cp
以上の海水掘削流体が得られる。
2.0 to 5.0 parts by weight of the composition of the present invention obtained by uniformly kneading these substances is used to obtain a salt concentration of 10,000 pp.
15 cp can be easily added by adding to 100 parts by weight of seawater of m or more and stirring with a stirrer normally used at excavation sites.
The above seawater drilling fluid can be obtained.

【0018】また、本発明の組成物は、清水に添加する
ことにより、従来と同じ清水掘削流体が得られる。この
場合、その添加量が海水の場合の添加量より少なくて
も、掘削流体の特性を維持した清水掘削流体が得られ
る。
When the composition of the present invention is added to fresh water, the same fresh water drilling fluid as the conventional one can be obtained. In this case, a fresh water drilling fluid that maintains the characteristics of the drilling fluid can be obtained even if the added amount is smaller than that in the case of seawater.

【0019】[0019]

【作用】本発明の組成物によれば、海水を直接に溶媒と
して用い、掘削現場で使用している撹拌機で撹拌するこ
とにより、容易に坑井の状況に適合した特性を持った掘
削流体を得ることが出来る。すなわち、本発明の組成物
を海水に溶解、懸濁せしめることにより、容易に坑井の
状況に適合した掘削流体を作液することができる。本発
明の組成物によれば、海水に投入し、掘削現場で通常使
用している撹拌機で撹拌するだけで、容易に懸濁、膨潤
し、増粘効果を示し、坑井の状況に適合する特性を持っ
た掘削流体を得ることができる。また、坑井の状況に応
じて、その掘削流体の特性を容易に選択、調整すること
ができる掘削流体が得られる。
According to the composition of the present invention, by using seawater directly as a solvent and stirring with a stirrer used at a drilling site, a drilling fluid having characteristics suitable for the condition of a well can be easily obtained. Can be obtained. That is, by dissolving and suspending the composition of the present invention in seawater, it is possible to easily prepare a drilling fluid suitable for the situation of a well. According to the composition of the present invention, it is easily suspended, swelled, and shows a thickening effect by simply adding it to seawater and stirring it with a stirrer which is usually used at a drilling site, and is suitable for the situation of a well. It is possible to obtain a drilling fluid having the characteristics that Further, it is possible to obtain a drilling fluid in which the characteristics of the drilling fluid can be easily selected and adjusted according to the situation of the well.

【0020】さらに、本発明の組成物を塩類濃度が10,0
00ppm 以上の海水に 2.0%以上添加することにより、掘
削流体を容易に得ることがきてる。
Further, the composition of the present invention has a salt concentration of 10,0.
Drilling fluid can be easily obtained by adding 2.0% or more to seawater of 00 ppm or more.

【0021】また、本発明の組成物は、数種類の材料を
適宜な方法により均一に混練し、粉末一品化したもので
ある。このため、海水に懸濁せしめるだけで容易に掘削
流体を作液することができる。
Further, the composition of the present invention is obtained by uniformly kneading several kinds of materials by an appropriate method to prepare a powder. For this reason, the drilling fluid can be easily produced simply by suspending it in seawater.

【0022】すなわち、本発明によれば、塩濃度が10,0
00ppm 以上の海水に対して、本発明の組成物を2〜5%
添加し、掘削現場で通常使用されている撹拌機で撹拌す
るだけで、容易に15cp以上の粘性を持った掘削流体を作
液することができる。ここで得られる掘削流体は、海水
で割水することまたは本発明の組成物を添加すること等
により流体の粘性の調整や、その他の掘削流体としての
特性の調整等をも可能にするため、管理面からも作業を
容易にすることができる。
That is, according to the present invention, the salt concentration is 10,0
2-5% of the composition of the present invention with respect to seawater of 00 ppm or more
A drilling fluid having a viscosity of 15 cp or more can be easily prepared simply by adding and stirring with a stirrer that is usually used at a drilling site. The drilling fluid obtained here is capable of adjusting the viscosity of the fluid by dividing with water or adding the composition of the present invention, and also for adjusting the characteristics of the other drilling fluid. The work can be facilitated from the management aspect as well.

【0023】また、本発明の組成物を用いた海水掘削流
体は、その他の添加剤としての潤滑剤、逸泥防止剤等を
添加して、それぞれの効果を掘削流体に付加することが
できるうえ、これらの添加によって掘削流体としての特
性に何等の悪影響を受けるものではない。
In addition, the seawater drilling fluid using the composition of the present invention can be added with other additives such as a lubricant and a mud loss preventive agent to add their respective effects to the drilling fluid. The addition of these does not have any adverse effect on the characteristics of the drilling fluid.

【0024】[0024]

【実施例】本発明の組成物ならびに人工海水または天然
海水を用いて掘削流体を作液し、その特性を比較した。
EXAMPLES The composition of the present invention and artificial seawater or natural seawater were used to prepare drilling fluids, and their characteristics were compared.

【0025】〔実施例1〕容量5リットルのヘンシェル
型ミキサーにNa型ベントナイト1,000gを張り込んだ後
に、ヘンシェル型ミキサーを運転しながら、天然ゼオラ
イト粉末305g、逆相エマルジョン型アクリルアミド・ア
クリル酸ソーダ共重合体(分子量1,000 万、有効成分35
%)125g、Na−カルボキシメチルセルロース(エーテル
化度0.9 、粘度2,500cp )175g、ポリアクリル酸ソーダ
粉末(分子量8,000 )55g 、及び炭酸ソーダ90g を順次
張り込んだ後に、更に5分間運転をして均一な粉末状の
掘削流体用組成物(組成物A)を得た。組成物Aを30,0
00ppm の人工海水(市販の人工海水粉剤アクアマリンS
を水道水に溶かして得た) 100部に対して2,3,4,
及び5部を添加して得た各掘削流体の特性を測定した。
作液方法は、ガラスビーカーに一定量の人工海水を取
り、回転数1,000rpmのラボスターラーで撹拌しながら、
組成物Aを人工海水 100部に対して、2,3,4,5部
になるように各々少量ずつゆっくりと添加した後、更に
30分撹拌して試験に供した。結果を表1に記す。
Example 1 After adding 1,000 g of Na-type bentonite to a Henschel-type mixer having a capacity of 5 liters, while operating the Henschel-type mixer, 305 g of natural zeolite powder and a reverse-phase emulsion-type acrylamide / sodium acrylate Polymer (molecular weight 10 million, active ingredient 35
%) 125 g, Na-carboxymethyl cellulose (etherification degree 0.9, viscosity 2,500 cp) 175 g, sodium polyacrylate powder (molecular weight 8,000) 55 g, and sodium carbonate 90 g are added in this order, and then run for another 5 minutes to homogenize. A powdery composition for drilling fluid (composition A) was obtained. Composition A 30,0
00ppm artificial seawater (commercial artificial seawater powder Aquamarine S
Was obtained by dissolving it in tap water) 2, 3, 4, to 100 parts
And the properties of each drilling fluid obtained by adding 5 parts were measured.
The method of liquid production is to take a certain amount of artificial seawater in a glass beaker and stir it with a lab stirrer with a rotation speed of 1,000 rpm,
Composition A was slowly added to 100 parts of artificial seawater in small amounts of 2, 3, 4, 5 parts, and then further added.
It was stirred for 30 minutes and used for the test. The results are shown in Table 1.

【表1】 FV:ファンネル粘度 500cc/500cc 秒 AV, FV, YV, GEL −strength、WLは、A.P.I.規格によ
る。 FW:遊離水
[Table 1] FV: Funnel viscosity 500cc / 500cc sec AV, FV, YV, GEL-strength, WL are based on API standard. FW: Free water

【0026】〔実施例2〕実施例1で得た組成物Aにつ
いて、15,000ppm 及び20,000ppm の人工海水での流体特
性を、実施例1と同様な方法で試験した。表2に15,000
ppm 、表3に20,000ppm の場合の結果を記す。
Example 2 The composition A obtained in Example 1 was tested for fluid properties in artificial seawater of 15,000 ppm and 20,000 ppm in the same manner as in Example 1. 15,000 in Table 2
ppm, Table 3 shows the results for 20,000 ppm.

【表2】 [Table 2]

【表3】 [Table 3]

【0027】〔実施例3〕Ca−ベントナイト1,000g、天
然ゼオライト(秋田県産)245g、逆相エマルジョン型ア
クリルアミド・アクリル酸ソーダ共重合物(分子量1,00
0 万、有効成分35%)120g、Na−カルボキシメチルセル
ロース(エーテル化度0.85、粘度2,800cp)146g、アクリ
ル酸ソーダ・メタクリル酸メチル共重合物粉体(分子量
12,000)20g 、アクリル酸ソーダ・スチレンスルホン酸
ソーダ共重合物粉体(分子量10,000)35g 、炭酸ソーダ
35g 、及びトリポリりん酸ソーダ35g を用いて、実施例
1と同様な方法で均一な粉末状の掘削流体用組成物(組
成物B)を得た。
[Example 3] 1,000 g of Ca-bentonite, 245 g of natural zeolite (produced in Akita Prefecture), reverse phase emulsion type acrylamide-sodium acrylate copolymer (molecular weight of 1,00
100,000, active ingredient 35%) 120g, Na-carboxymethylcellulose (etherification degree 0.85, viscosity 2,800cp) 146g, sodium acrylate / methyl methacrylate copolymer powder (molecular weight
12,000) 20 g, sodium acrylate / sodium styrene sulfonate copolymer powder (molecular weight 10,000) 35 g, sodium carbonate
Using 35 g and 35 g of sodium tripolyphosphate, a uniform powdery composition for drilling fluid (composition B) was obtained in the same manner as in Example 1.

【0028】組成物Bは天然の海水(秋田県本庄市付近
の海岸で採取:塩濃度29,000ppm 、pH7.95)を用いて、
実施例1と同様に掘削流体を作って、その流体特性を測
定した。結果を表4に記す。
Composition B was prepared using natural seawater (collected from the coast near Honjo City, Akita Prefecture: salt concentration 29,000 ppm, pH 7.95).
A drilling fluid was prepared in the same manner as in Example 1 and its fluid characteristics were measured. The results are shown in Table 4.

【表4】 [Table 4]

【0029】〔実施例4〕実施例1で得た組成物Aを使
って、某BH抗打設ボーリング現場で使われている海水ベ
ースの掘削流体の流動特性の改善を試みた。
Example 4 The composition A obtained in Example 1 was used to try to improve the flow characteristics of a seawater-based drilling fluid used in a BH-drilling boring site.

【0030】即ち、現場よりサンプリングした掘削流体
100部に対し組成物Aを 1.0部、1.5 部及び 2.5部添加
したときの流動特性の変化を測定した。試験の方法は、
実施例1と同様に行った。なお、現場よりサンプリング
した掘削流体の海水濃度は14,300ppm であった。結果を
表5に記す。
That is, the drilling fluid sampled from the site
The change in the flow properties when 1.0 part, 1.5 parts and 2.5 parts of composition A were added to 100 parts was measured. The test method is
The same procedure as in Example 1 was performed. The seawater concentration of the drilling fluid sampled from the site was 14,300 ppm. The results are shown in Table 5.

【表5】 *SG:比重[Table 5] * SG: Specific gravity

【0031】表5で示すように、組成物Aを添加する前
の掘削流体は、ファンネル粘度、見かけ粘度が低い割り
にはゲルストレングスが大きく、また、脱水量、遊離水
も異常に多い。しかし、組成物Aを1%、 1.5%、2%
と添加してゆくにしたがって、掘削流体の流動特性は改
善された。
As shown in Table 5, the drilling fluid before the addition of the composition A has a large gel strength in spite of its low funnel viscosity and apparent viscosity, and also has an abnormally large amount of dehydration and free water. However, with Composition A, 1%, 1.5%, 2%
The flow characteristics of the drilling fluid were improved with the addition of.

【0032】[0032]

【発明の効果】本発明の掘削流体用組成物によれば、清
水の代わりに海水を使用して、容易に増粘効果が得ら
れ、坑井の状況に適合した特性を有する掘削流体を得る
ことができる。従って、石油、天然ガス、土木、鉱山な
どの掘削において広く利用できるものである。
EFFECTS OF THE INVENTION According to the composition for drilling fluid of the present invention, seawater is used in place of fresh water, and a thickening effect can be easily obtained, and a drilling fluid having characteristics suited to the situation of a well is obtained. be able to. Therefore, it can be widely used for excavating oil, natural gas, civil engineering, mines and the like.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ベントナイト、カルボキシメチルセルロ
ース、ポリアクリル酸系重合体または共重合体、ゼオラ
イト類、分散剤そして無機塩類を均一に混練し、粉末化
したことを特徴とする掘削流体用組成物。
1. A composition for a drilling fluid, wherein bentonite, carboxymethyl cellulose, a polyacrylic acid-based polymer or copolymer, zeolites, a dispersant and inorganic salts are uniformly kneaded and powdered.
JP2690191A 1991-01-28 1991-01-28 Composition for drilling fluid Expired - Lifetime JP2957293B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP2690191A JP2957293B2 (en) 1991-01-28 1991-01-28 Composition for drilling fluid

Publications (2)

Publication Number Publication Date
JPH073254A true JPH073254A (en) 1995-01-06
JP2957293B2 JP2957293B2 (en) 1999-10-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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US6989057B2 (en) 2002-12-10 2006-01-24 Halliburton Energy Services, Inc. Zeolite-containing cement composition
WO2005014754A1 (en) * 2003-07-18 2005-02-17 Halliburton Energy Services, Inc. Zeolite-containing treating fluid
WO2005054625A1 (en) * 2003-12-04 2005-06-16 Halliburton Energy Services, Inc. Zeolite-containing remedial compositions
WO2005059301A1 (en) * 2003-12-17 2005-06-30 Halliburton Energy Services, Inc. Zeolite-containing settable spotting fluids
US7182137B2 (en) 2004-09-13 2007-02-27 Halliburton Energy Services, Inc. Cementitious compositions containing interground cement clinker and zeolite
US7219733B2 (en) 2004-09-29 2007-05-22 Halliburton Energy Services, Inc. Zeolite compositions for lowering maximum cementing temperature
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JP2010024432A (en) * 2008-06-16 2010-02-04 Taisei Corp Additive, and soil-pressed shield method and soil-pressed pipe-jacking method using the same
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