GB2184468A - Preventing the inflow of water from water-bearing strata - Google Patents
Preventing the inflow of water from water-bearing strata Download PDFInfo
- Publication number
- GB2184468A GB2184468A GB08630278A GB8630278A GB2184468A GB 2184468 A GB2184468 A GB 2184468A GB 08630278 A GB08630278 A GB 08630278A GB 8630278 A GB8630278 A GB 8630278A GB 2184468 A GB2184468 A GB 2184468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- blocking
- medium
- strata
- bearing
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000006260 foam Substances 0.000 claims abstract description 11
- 238000009412 basement excavation Methods 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000003381 stabilizer Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002563 ionic surfactant Substances 0.000 claims description 4
- 239000003673 groundwater Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- -1 amine salts Chemical class 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000002734 clay mineral Substances 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 2
- 239000004094 surface-active agent Substances 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
- C09K8/518—Foams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A method and a medium for blocking the inflow of mineralized and/or acid-containing water from water-bearing strata, and in particular from fissured or porous solid rock, into excavations or mine openings, comprises injecting a treating fluid into water-bearing horizons with overlying strata of cohesive material. The injection pressure is at least 0.2 MPa below the frac pressure of the water-bearing horizons or the overlying strata. Gas is injected to foam the treating fluid, this treating fluid consists of a surfactant to which suitable stabilizers are added.
Description
SPECIFICATION
Method and a medium for blocking the inflow of mineralized and/or acid-containing water.
This invention relates to a method and a medium for blocking the inflow of mineralized and/or acid-containing water from water-bearing strata, and in particular from fissured or porous solid rock, into excavations or mine openings.
As is generally known, water inflows from water-bearing strata into mine openings or excavations are prevented by removing the water from the strata concerned.
Appropriate processes are: well point drainage; roadway drainage; and combinations or roadway andfilterwell drainage, and drainage bydrainage roads and filter drains provided between water-bearing strata and drainage roads.
Other processes employed to prevent water inflows are blocking processes such as the provision of cut-offtrenches and the injection of blocking media into the pore spaces of water-bearing strata.
Basically, the processes mentioned help to keep water inflows into mine openings or excavations within desired limits.
However, the above processes have substantial disadvantages: they require enormous expenditures in terms of materials and technology. In well point or roadway drainage large amounts of water are removed from mine openings but these drainage operations have a detrimental effect on large areas which would otherwise be undisturbed by mining. In addition to the water in situ, water from catchment areas of excavations or mine openings has to be drained away continuously. Mainly, the blocking processes known so far involve greattechnoligical efforts, or are restricted, with respect to the blocking depths; they also involve substantial costs of blocking media such as synthetic resins or polymers orsimilarsubstancesusedforporespaceblocking (DD-PS21 902; DE-2544543).
An object ofthe invention is to reduce, or block, the inflow of mineralized and/or acid containing water from water-bearing strata, and in particularfrom fissured or porous solid rock, into excavations or mine openings, therby eliminating the disadvantages mentioned hereinabove and reducing the material expenditures involved.
According to this invention there is provided a method for blocking the inflow of mineralized and/or acid-containing water from water-bearing strata, and in particularfrom fissured or porous solid rod, into excavations or mine openings, in which method a complex treating fluid is prepared on the surface and is then introduced continuously, via injection wells, into a water-bearing horizon with overlying strata of cohesive material; and wherein the injectin pressure is at least 0.2 MPa below the frac pressure ofthe water-bearing horizon orthe overlying strata; and wherein a predetermined volume of gas is injected to foam the treating fluid.
In this invention the inflow of mineralized and/or acid-containing water from surrounding formations into mine opernings or excavations is blocked by injecting suitable media into the water-bearing strata.
A homogenous and complex liquid is prepared on the surface and is then introduced into injection wells in orderto reach andtreatall layers to be blocked. Afterthe continuous injection of this liquid via said wells into the water-bearing horizons with overlying cohesive strata a calculated volume of gas is injected to form a disperse medium (foam)for blocking.
The injection pressure required is at least 0.2 MPa below the frac pressure of the water-bearing horizons (layers) or the overlying strata.
Technological modifications stimulating foam formation consist of an injection of gas before and after the injection of the solution, or in an alternating injection of gas and a solution. In such processes the formation of a disperse medium is particularly intensive.
The treating fluids consisting of aqueous solutions of surfactants which form finely disperse and stable foams having a comparatively high density (p > 0.04 g/cm3) if contacted with a gas, are introduced into the water-bearing horizons and are foamed by means of the gas injected. Using a predetermined concentrations, a temporary barrier blocking the flow of ground water is formed in the process of foaming said fluid, this barrier having a specified extension as a function of the quantity of treating fluid used.
Preferably, the treating fluids should contain 0.5 to 5.0% of a surfactant. Nonionics such as oxyethylated fatty alcohols are used, or mixtures of nonionics and ionic surfactants such as amine salts, said mixtures containing no more than 5% of ionic surfactants.
Optionally, stabilizers such as polymers, clay minerals or higher alcohols are added to enhance the blocking effect, with portions ranging between 0.01 and 0.5 mass % related to the total amount oftreating fluid.
The barriers formed by the method according to the present invention result in a reliabletemporaty control of the water contained in the water-bearing horizon.
Contrary to conventional processes involving high technological effort and financial expenditure, the method according to the invention consists of blocking the inflow of water by means of a foam which fills the pore spaces of a given horizon. This foam meets the quality requirements with regard to stability and resistance to highly mineralized ground water. By using suitable surfactants, treating fluids can be produced which form stable blocking foams in the pore spaces of rocks even under conditions of extreme pressure and temperature.
The injection of the blocking fluid and the gas does not involve substantial technological expense. The blocking method may be used separately or in combination with known methods such as the blocking of deep subsurface areas adjacentto the bottom of cut-offtrenches.
Example
The treating fluid amounting to 5 m3 per metre of thickness of the water-bearing horizon and consisting of a 5% solution of a nonionic such as e.g.
Dispergator BO, mixed with 5 parts by weight of an ionicsurfactantsuch as e.g. FCF350 is introduced in up to 5 equal portions in the process of alternating injections of said fluid and a gas into water-bearing horizons at a depth of 250m containing highly mineralized water. To enhance the blocking effect 0.1 mass % of polymer (TBS-O) (related to the total amount of fluid) are added to the treating fluid. The injection pressure employed to introduce the treating fluid is 2.8 MPa, and the injection pressure of the gas is 2.8to 3.5 MPa, and the injection pressure of the gas is 2.8 to 3.5 MPa. In the process, the permeability of the water-bearing horizon was reduced by 103 m/s.
Claims (5)
1. A method for blocking the inflow of mineralized and/or acid-containing water from water-bearing strata, and in particular from fissured or porous solid rock, into excavations or mine openings, in which method a complex treating fluid is prepared on the surface and is then introduced continuously, via injection wells, into a water-bearing horizon with overlying strata of cohesive material; and wherein the injection pressure is at least 0.2 MPa belowthe frac pressure of the water-bearing horizon or the overlying strata; and wherein a predetermined volume of gas is injected to foam the treating fluid.
2. A method according to Claim 1 wherein irrespective of the composition of the substances used, such substances are introduced in portions, by alternating injections of the fluid and a gas, to intensifytheformation of a disperse medium for blocking.
3. A medium for blocking the inflow of mineralized and/or acid-containing water from water-bearing strata, and in particularfrom rock strata containing ground water, into excavations, opencast mines or other mine openings, said medium being contained in a treating fluid and characterized in that is comprises a homogenous aqueous solution containing 0.5to 5.0 mass % of nonionicsuch as oxoethylated fatty alcohols, or mixtures of nonionics and ionic surfactants such as amine salts, said mixtures containing no more than 5% of ionic surfactants; that the medium forms a stable and finely disperse foam by means of a gas injected, said foam having a density of p > 0.04 g/cm3.
4. Medium in accordancewithClaim3,wherein stabilizers such as polymers, clay minerals or higher alcohols are added to enhance the blocking effect, with portions ranging between 0.01 and 0.5 mass % related to the amount of treating fluid.
5. A method or a medium substantially as herein described and exemplified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD28464785A DD256429A3 (en) | 1985-12-18 | 1985-12-18 | METHOD AND MEDIUM FOR BLOCKING MINERALIZED AND / OR SAEFERING WATER INFLUENCES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8630278D0 GB8630278D0 (en) | 1987-01-28 |
| GB2184468A true GB2184468A (en) | 1987-06-24 |
Family
ID=5574565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08630278A Withdrawn GB2184468A (en) | 1985-12-18 | 1986-12-18 | Preventing the inflow of water from water-bearing strata |
Country Status (9)
| Country | Link |
|---|---|
| BE (1) | BE905937A (en) |
| BG (1) | BG48046A1 (en) |
| CS (1) | CS578386A1 (en) |
| DD (1) | DD256429A3 (en) |
| DE (1) | DE3638246A1 (en) |
| FR (1) | FR2591657A1 (en) |
| GB (1) | GB2184468A (en) |
| HU (1) | HUT42804A (en) |
| NL (1) | NL8603114A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0380150A1 (en) * | 1989-01-27 | 1990-08-01 | Pumptech N.V. | Delayed rigid foam systems and applications in particular for selective plugging treatments in the oil industry |
| EP0380151A1 (en) * | 1989-01-27 | 1990-08-01 | Pumptech N.V. | Delayed rigid foam systems and applications in particular for plugging - selective treatments in the oil industry |
| WO1991007568A1 (en) * | 1989-11-17 | 1991-05-30 | Ministerstvo Gazovoi Promyshlennosti Sssr | Method for finishing a well |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811757B (en) * | 2019-03-12 | 2020-12-01 | 安徽理工大学 | A kind of prevention method of surface fissure geological disaster in mining area |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530940A (en) * | 1969-02-05 | 1970-09-29 | Pan American Petroleum Corp | Increasing foam stability in earth formations |
| GB2066874A (en) * | 1980-01-02 | 1981-07-15 | Shell Int Research | Method of drilling a borehole through cavernous underground formations |
| GB2119358A (en) * | 1982-04-30 | 1983-11-16 | Dow Chemical Co | Lightweight cement slurry |
| US4420462A (en) * | 1982-03-22 | 1983-12-13 | Clyde Robert A | Catalytic heat exchanger |
| US4495995A (en) * | 1980-05-19 | 1985-01-29 | Phillips Petroleum Company | Method for plugging and subsequent treatment of subterranean formations |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3342256A (en) * | 1964-04-17 | 1967-09-19 | Union Oil Co | Method for recovering oil from subterranean formations |
| US3330351A (en) * | 1964-07-24 | 1967-07-11 | Union Oil Co | Method for inhibiting the flow of liquid into a well bore |
| DE2544543C2 (en) * | 1975-10-04 | 1986-07-03 | Kyokado Engineering Co., Ltd., Tokio/Tokyo | Method of consolidating poor quality soil |
| CH642415A5 (en) * | 1979-08-24 | 1984-04-13 | Grund Und Tiefbau Ag Bern | Method of sealing a ground formation which surrounds an underground working face and is under the pressure of ground water |
-
1985
- 1985-12-18 DD DD28464785A patent/DD256429A3/en not_active IP Right Cessation
-
1986
- 1986-07-31 CS CS865783A patent/CS578386A1/en unknown
- 1986-08-04 BG BG7604786A patent/BG48046A1/en unknown
- 1986-11-10 DE DE19863638246 patent/DE3638246A1/en not_active Ceased
- 1986-11-27 FR FR8616557A patent/FR2591657A1/en not_active Withdrawn
- 1986-12-01 HU HU496386A patent/HUT42804A/en unknown
- 1986-12-08 NL NL8603114A patent/NL8603114A/en not_active Application Discontinuation
- 1986-12-17 BE BE2/61116A patent/BE905937A/en not_active IP Right Cessation
- 1986-12-18 GB GB08630278A patent/GB2184468A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530940A (en) * | 1969-02-05 | 1970-09-29 | Pan American Petroleum Corp | Increasing foam stability in earth formations |
| GB2066874A (en) * | 1980-01-02 | 1981-07-15 | Shell Int Research | Method of drilling a borehole through cavernous underground formations |
| US4495995A (en) * | 1980-05-19 | 1985-01-29 | Phillips Petroleum Company | Method for plugging and subsequent treatment of subterranean formations |
| US4420462A (en) * | 1982-03-22 | 1983-12-13 | Clyde Robert A | Catalytic heat exchanger |
| GB2119358A (en) * | 1982-04-30 | 1983-11-16 | Dow Chemical Co | Lightweight cement slurry |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0380150A1 (en) * | 1989-01-27 | 1990-08-01 | Pumptech N.V. | Delayed rigid foam systems and applications in particular for selective plugging treatments in the oil industry |
| EP0380151A1 (en) * | 1989-01-27 | 1990-08-01 | Pumptech N.V. | Delayed rigid foam systems and applications in particular for plugging - selective treatments in the oil industry |
| FR2642468A1 (en) * | 1989-01-27 | 1990-08-03 | Schlumberger Cie Dowell | FOAM SYSTEMS FOR SELECTIVELY CLAMPING UNDERGROUND FORMATIONS, ESPECIALLY AROUND PETROLEUM WELLS |
| FR2642467A1 (en) * | 1989-01-27 | 1990-08-03 | Schlumberger Cie Dowell | DELAYED RIGID FOAM SYSTEMS AND APPLICATIONS IN PARTICULAR TO SELECTIVE CLAMPING TREATMENTS IN THE PETROLEUM INDUSTRY |
| WO1991007568A1 (en) * | 1989-11-17 | 1991-05-30 | Ministerstvo Gazovoi Promyshlennosti Sssr | Method for finishing a well |
Also Published As
| Publication number | Publication date |
|---|---|
| BE905937A (en) | 1987-04-16 |
| GB8630278D0 (en) | 1987-01-28 |
| DE3638246A1 (en) | 1987-06-25 |
| DD256429A3 (en) | 1988-05-11 |
| BG48046A1 (en) | 1990-11-15 |
| HUT42804A (en) | 1987-08-28 |
| FR2591657A1 (en) | 1987-06-19 |
| CS578386A1 (en) | 1988-10-14 |
| NL8603114A (en) | 1987-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |