GB2027421A - Rapid-setting dry packing mix for eliminating bore hole troubles and method of manufacture thereof - Google Patents

Rapid-setting dry packing mix for eliminating bore hole troubles and method of manufacture thereof Download PDF

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Publication number
GB2027421A
GB2027421A GB7923591A GB7923591A GB2027421A GB 2027421 A GB2027421 A GB 2027421A GB 7923591 A GB7923591 A GB 7923591A GB 7923591 A GB7923591 A GB 7923591A GB 2027421 A GB2027421 A GB 2027421A
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GB
United Kingdom
Prior art keywords
weight
per cent
mix
powder
barium hexaferrite
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
GB7923591A
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GB2027421B (en
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.)
GEOL UPRAV TSENTRAL RAIONOV
SEV ZAP GEOL UPRAV
Original Assignee
GEOL UPRAV TSENTRAL RAIONOV
SEV ZAP GEOL UPRAV
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
Priority claimed from SU782631355A external-priority patent/SU866129A1/en
Priority claimed from SU782631356A external-priority patent/SU874979A1/en
Application filed by GEOL UPRAV TSENTRAL RAIONOV, SEV ZAP GEOL UPRAV filed Critical GEOL UPRAV TSENTRAL RAIONOV
Publication of GB2027421A publication Critical patent/GB2027421A/en
Application granted granted Critical
Publication of GB2027421B publication Critical patent/GB2027421B/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Sealing Material Composition (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

A rapid-setting dry packing mix for eliminating bore hole troubles contains: 40 to 50 per cent by weight of powder cement; 50 to 60 per cent by weight of powder gypsum or powder alabaster; 0.01 to 3.0 per cent by weight of powder barium hexaferrite in particles of a size commensurable with that of particles of the binders. Silicon gel may be present. The mix may be manufactured by mixing in an alternating electromagnetic field the powder cement, the gypsum or alabaster and the barium hexaferrite taken in required proportions, said barium hexaferrite being introduced in the form of magnetized pellets which are abraded during mixing.

Description

SPECIFICATION Rapid-setting dry packing mix for eliminating bore hole troubles and method of manufacture thereof The invention relates to the field of hole boring, and more particularly, to a rapid-setting packing mix for eliminating bore hole troubles and to a method of manufacturing thereof.
The invention can be employed in geological suvey, civil engineering surveys, petroleum and gas production and drilling and blasting operations for eliminating zones of geological troubles involving absorption of flushing fluid, water inflow or unstable spacing of holes.
This invention provides a rapid-setting dry packing mix for eliminating bore hole troubles manufactured on the basis of a powder gypsum-cement binder containing 40 to 50 per cent by weight of cement and 50 to 60 per cent by weight of gypsum or alabaster, wherein, according to the invention, there are contained 0.01 to 3.0 per cent by weight of barium hexaferrite powder in particles of a size commensurable with that of particles of the binder.
It is advisable to add 5 to 1 5 per cent by weight of silica gel to the mix.
The invention also provides a method for manufacturing the mix consisting in that the gypsumcement binder is obtained by mechanical mixing of powder cement and gypsum or alabaster taken in required proportions, wherein, according to the invention, the components are mixed in an alternating electromagnetic field, whereas the barium hexaferrite powder is introduced at the expense of abrasion of working tools which are magnetized pellets prepared on the basis of barium hexaferrite.
It is advisable to employ pellets prepared solely from barium hexaferrite.
No less advantageous is to employ pellets manufactured of barium hexaferrite with inert additives.
It is preferable to have a proportion of pellets of greater abradability.
The rapid-setting dry packing mix for eliminating bore hole troubles and the method for the manufacture thereof ensure a required strength gain rate, a high bonding to rock making up hole walls and a long storage life even under adverse conditions.
A rapid-setting dry packing mix for eliminating bore hole troubles is prepared on the basis of a gypsum-cement binder containing 40 to 50 percent by weight of cement and 50 to 60 per cent by weight of gypsum or alabaster.
In addition, the mix contains 0.01 to 3.0 per cent by weight of powder barium hexaferrite in particles of a size commensurable with that of particles of the binder.
A mix with less than 0.01 per cent by weight barium hexaferrite fails to provide required strength and bonding characteristics.
Introduction into the mix of more than 3 per cent by weight of barium hexaferrite substantially retards the beginning of setting and lowers the strength of the lining.
The mix can additionally carry from 5 to 1 5 per cent by weight of silica gel introduced either as a powder or pellets.
The addition of silica gel increases the storage life of the mix.
The rapid-setting dry packing mix according to the invention for eliminating bore hole troubles is prepared in the manner below.
Powder cement and gypsum or alabaster taken in specified proportions are mixed in a chamber in an alternating electromagnetic field.
The addition to the mix of barium hexaferrite is effected through abrasion of pellets in the course of stirring in the chamber.
The barium hexaferrite pellets can be prepared either entirely of barium hexaferrite or with inert admixtures.
It proves to be advantageous to have a proportion of pellets of a greater abradability.
The invention will now be described with reference to the following illustrative Examples.
Properties of the rapid-setting dry packing mix are presented in Tables 1 through 3 accompanying the examples.
EXAMPLE 1 Components of the mix, 50 per cent of cement and 50 per cent of alabaster, taken in an amount of 2 kg, were charged into a cylindrical chamber 100 mm in diameter holding 500 g of magnetized pellets of barium hexaferrite 5 mm in diameter.
The chamber is encompassed with an electromagnetic coil, or solenoid, having in cross section a height of 80 mm and a width of 45 mm with wound copper wire 2 mm in diameter.
Once the electromagnetic coil was connected to a 220 V, 50 Hz (cps) mains, the magnetized balls moved in chaotic manner to stir the mix components in the chamber.
After a ten-second period of treatment, the following mix was obtained, containing in per cent by weight: Alabaster 49.995 cement 49.995 barium hexaferrite 0.01 EXAMPLE 2 To raise the content of barium hexaferrite, 100 g of similar pellets having a great abradability (manufactured at a temperature by 500C lower than the recommended - 1 25O0C - value) were added to the remaining 497.8 g of pellets (Example 1).
All the other process parameters were unaltered.
After a ten-second period of treatment, the following mix was obtained, containing in per cent by weight: alabaster 49.95 cement 49.95 barium hexaferrite 0.1 EXAMPLE 3 After a fifty-second period of treatment of 2 kg of mixture composed of 50 per cent by weight of cement and 50 per cent by weight of alabaster, a mix was obtained, of the following composition, in per cent by weight: cement 49.5 alabaster 49.5 barium hexaferrite 0.1 All the other parameters of the process described in the Example 1 were unaltered.
EXAMPLE 4 After a ten-second period of treatment of 2 kg of mixture composed of 50 per cent by weight of cement and 50 per cent by weight of alabaster, a mix was obtained of the following composition, in per cent by weight: alabaster 48.5 cement 48.5 barium hexaferrite 3 Subsequently, the setting time and the strength in uniaxial compression of the above mixes were determined.
The mixes were tested for setting time by the Vicat needle method, whereas tests for strength in uniaxial compression were carried out on cubes measuring 7 x 7 x 7 cm. The results of the tests are listed in the table below: TABLE 1 Packing Mix Setting Time and Strength in Uniaxial Compression, kg/cm2 Mix Strength in uniaxial compression, kg/cm2 composition: cement - C, hardening conditions alabaster - A, barium Setting time air hydraulic hexaferrite - H No. of per cent by start end 1 2 3 1 2 3 Example weight (min.) (min.) hr hrs hrs hr hrs hrs 1. Check sample C - 50 A - 50 6 8 17 26 70 22 20 75 2. Example 1 C - 49.995 A - 49.995 H - 0.01 7 9 18 26 70 25 20 75 3. Example 2 C - 49.95 A - 49.95 H - 0.01 14 15 60 148 198 75 70 180 4.Example 3 C - 49.5 A - 49.5 H-1.0 14 16 27 36 - - - - 5. Example 4 C-48.5 A - 48.5 H - 3.0 20 25 18 22 - - - - As is readily apparent from this table, the best physicochemical properties are those of a packing mix containing: cement, 49.95 per cent by weight; alabaster, 49.95 per cent by weight; and barium hexaferrite, 0.1 per cent by weight.
A packing mix containing: cement 49.995 per cent by weight; alabaster, 49.995 per cent by weight; and barium hexaferrite, 0.01 per cent by weight differs very little in properties from the check sample, whereas a packing mix having the following composition: cement, 48.5 per cent by weight; alabaster, 48.5 per cent by weight; and barium hexaferrite, 3.0 per cent by weight features a substantially longer setting time and lower strength.
Therefore, further tests concerned the packing mix having the best physicochemical properties, or the mix containing: cement, 49.95 per cent by weight; alabaster, 49.95 per cent by weight; and barium hexaferrite, 0.1 per cent by weight.
Results of tests for strength of bonding of cement stone to rock (in tension) are listed in Table 2, where C - cement, A -- alabaster, H - barium hexaferrite.
TABLE 2 Strength of Bonding of Cement Stone to Rock in Tension, g/cm2 Basalt Quartz listvenite Chalk sandstone Mix composition. contact time, min. contact time, min. contact time, min.
per cent by weight 5 10 15 20 5 10 15 20 5 10 15 20 Check mix C - 50 A - 50 3.18 6.5 14.3 19.0 3.18 6.7 15.4 22.2 3.21 6.9 14.5 24.1 C - 49.95 A - 49.95 H - 0.1 1.98 6.3 15.4 40.9 2.4 6.7 17.5 46.0 2.8 7.5 22.1 56.3 Because of a high activity of the packing mix according to the invention and due to the problems involved in its storage during geological parties, some silica gel, in the form of both powder and pellets or as a mixture of these, is added to the mix.
Investigations of the variation of properties of the packing mix containing: cement, 49.95 per cent by weight; alabaster, 49.95 per cent by weight; and barium hexaferrite, 0.1 per cent by weight which has been stored under Arctic conditions are given in Table 3.
TABLE 3 Variation of the Properties of a Packing Mix Stored under Arctic Conditions Addition . . . Compressive strength in per of silica Friability cent of the starting value gel, per No. of cent by 0 6 12 24 0 6 12 24 Example weight mo. mo. mo. mo. mo. mo. mo. mo.
Check - good bad bad bad 100 40 - - 1 5 good good med. bad 100 100 80 30 2 10 good good good med. 100 100 100 80 3 15 good good good good 100 100 100 100 4 20 good good good good 80 80 - - The table shows clearly that a mix with 5 per cent by weight of silica gel retains its high physicomechanical properties for up to 1 year, but these, however, substantially deteriorate in further storage.
On the other hand, an addition of 20 per cent of silica gel results in a loss of strength by the cement stone, so that the optimum content of silica gel is to be taken equal to 1 5 per cent by weight.

Claims (8)

1. A rapid-setting dry packing mix for eliminating bore hole troubles manufactured on the basis of a powder gypsum-cement binder containing: 40 to 50 per cent by weight of powder cement; 50 to 60 per cent by weight of powder gypsum of alabaster; 0.01 to 3.0 per cent by weight of barium hexaferrite in particles of a size commensurable with that of particles of the binder.
2. A mix as claimed in claim 1, containing 5 to 1 5 per cent by weight of silica gel.
3. A method for manufacturing a mix as claimed in claims 1 and 2, consisting in that the gypsumcement binder is obtained by mechanical mixing in an alternating magnetic field of said powder cement, gypsum of alabaster and barium hexaferrite taken in required proportions, said powder barium hexaferrite being introduced through abrasion of working tools which are magnetized pellets manufactured on the basis of barium hexaferrite.
4. A method as claimed in claim 3, wherein said pellets are manufactured entirely of barium hexaferrite.
5. A method as claimed in claim 3, wherein said pellets are manufactured of barium hexaferrite with inert additives.
6. A method as claimed in ciaims 4 and 5, wherein a proportion of said pellets has a higher abradability.
7. A rapid-setting dry packing mix for eliminating bore hole troubles substantially as hereinbefore described with reference to, and as shown in, the accompanying Examples.
8. A method for obtaining a rapid-setting dry packing mix for eliminating bore hole troubles substantially as hereinbefore described with reference to, and as shown in, the accompanying Examples.
GB7923591A 1978-07-06 1979-07-06 Rapid-setting dry packing mix for eliminating bore hole troubles and method of manufacture thereof Expired GB2027421B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU782631355A SU866129A1 (en) 1978-07-06 1978-07-06 Method of preparing plugging composition
SU782631356A SU874979A1 (en) 1978-07-12 1978-07-12 Cementing composition

Publications (2)

Publication Number Publication Date
GB2027421A true GB2027421A (en) 1980-02-20
GB2027421B GB2027421B (en) 1982-09-22

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GB7923591A Expired GB2027421B (en) 1978-07-06 1979-07-06 Rapid-setting dry packing mix for eliminating bore hole troubles and method of manufacture thereof

Country Status (5)

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CA (1) CA1132784A (en)
DE (1) DE2927420C2 (en)
FI (1) FI66422C (en)
FR (1) FR2434129A1 (en)
GB (1) GB2027421B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691774A (en) * 1985-11-15 1987-09-08 Dowell Schlumberger Incorporated Novel ferrofluids for use in cementing wells
GB2227263A (en) * 1988-10-03 1990-07-25 Fosroc International Ltd Placement of grout in a void

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016202618A1 (en) 2016-02-19 2017-08-24 Wacker Chemie Ag Stabilizers for improving the storage stability of building material dry formulations containing polymer powders

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2559015A1 (en) * 1974-12-30 1976-09-16 Kalinskij Kom Str Materialov N Coloured cellular concrete mixture - which is prepared with dye/surfactant suspension treated in electro magnetic field with ferromagnetic elements (SW2607776)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691774A (en) * 1985-11-15 1987-09-08 Dowell Schlumberger Incorporated Novel ferrofluids for use in cementing wells
GB2227263A (en) * 1988-10-03 1990-07-25 Fosroc International Ltd Placement of grout in a void

Also Published As

Publication number Publication date
FI66422C (en) 1984-10-10
FI66422B (en) 1984-06-29
FI792114A (en) 1980-01-07
FR2434129A1 (en) 1980-03-21
CA1132784A (en) 1982-10-05
FR2434129B1 (en) 1983-11-18
DE2927420A1 (en) 1980-01-24
DE2927420C2 (en) 1983-10-06
GB2027421B (en) 1982-09-22

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PCNP Patent ceased through non-payment of renewal fee