CN110734748A - leak-proof plugging filling agent - Google Patents
leak-proof plugging filling agent Download PDFInfo
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- CN110734748A CN110734748A CN201911321294.7A CN201911321294A CN110734748A CN 110734748 A CN110734748 A CN 110734748A CN 201911321294 A CN201911321294 A CN 201911321294A CN 110734748 A CN110734748 A CN 110734748A
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- parts
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- plugging
- calcium carbonate
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- 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
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- 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
- C09K8/467—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 containing additives for specific purposes
Abstract
The invention discloses leak-proof plugging fillers, which comprise the following raw materials, by weight, 6-15 parts of aluminum hydroxide, 8-20 parts of silica powder for ceramics, 10-25 parts of talcum powder, 4-10 parts of sodium silicate, 10-20 parts of nano calcium carbonate, 2-10 parts of ultrafine calcium carbonate, 4-20 parts of limestone powder, 2-8 parts of graphite, 2-10 parts of white asphalt and 3-10 parts of calcium oxide, wherein the raw materials are sequentially added into a container according to the parts by weight, uniformly mixed and stirred, dried and crushed or sieved into granular products with the grain size of 0.05-0.8 mm.
Description
Technical Field
The invention relates to the technical field of drilling plugging agents, in particular to kinds of leakage-proof plugging filling agents.
Background
A conventional plugging agent used in petroleum drilling is prepared by using a plurality of inert materials such as shell powder, mica, stones with different particle sizes, quartz sand and the like as a leak-proof plugging filler in , wherein the leak-proof plugging filler plays a role in petroleum drilling operation, but the leakage loss is more and more serious along with petroleum exploration and development, the fillers far cannot meet the current requirements, and the leak-proof plugging agent has the defects or disadvantages that ① filler is completely plugged by physical filling and has poor filling effect, ② fillers do not have coagulation property, the particle size of the filler is not matched with a leakage channel and cannot enter the leakage channel, the fillers cannot enter the leakage channel and cannot be left in the leakage channel, ③ fillers have large using amount and are easy to seal, when the filling amount is small, the fillers cannot play a role in filling, the leakage crack channel cannot be retained easily, when the leakage rate is large, the fluidity is poor, the filling and plugging effect is poor, the fillers cannot enter a leakage layer, ④ plugging filler has large using amount and poor fluidity, although the particle size can enter cracks and channels, but cannot enter deep cracks and cannot cause coagulation because the plugging effect of plugging by repeated plugging of plugging by a plugging pump when the circulation pressure excitation of a pump, the plugging pump plugging agent is poor, the plugging pump plugging effect, the plugging agent has a plugging process of plugging is easy to cause repeated plugging leakage plugging failure, the plugging of plugging a plugging well plugging, the plugging effect, the plugging material, the plugging effect, the plugging pump plugging is high plugging effect, the plugging pump plugging is easy.
Disclosure of Invention
Aiming at the defects of the prior art, of the invention provides leak-proof plugging filling agents, which adopt a plurality of material combinations with different particle sizes and different performances, have both physical plugging and micro-consolidation functions, have good fluidity and pumpability after being prepared into plugging slurry, can fill gaps of different cracks when entering a leakage passage, have good plugging effect after being filled in the plugging slurry under the action of downhole temperature and pressure, have high strength of formed plugs and strong supporting capability, are safe and quick to construct in plugging, and can be applied in plugging formulas with different performances by compounding, and the technical scheme is as follows:
kinds of leak-proof plugging filling agent, which comprises the following raw materials by weight:
6-15 parts of aluminum hydroxide;
8-20 parts of silicon micropowder for ceramics;
10-25 parts of talcum powder;
4-10 parts of sodium silicate;
10-20 parts of nano calcium carbonate;
3-10 parts of superfine calcium carbonate;
4-20 parts of Qingshi powder;
2-8 parts of graphite;
2-10 parts of white asphalt;
3-10 parts of calcium oxide;
the mesh number of the superfine calcium carbonate is 800-1200 meshes;
the preparation method of the leak-proof plugging filler comprises the following steps: adding the materials into a container in sequence according to the parts by weight at normal temperature and normal pressure, mixing and stirring uniformly, drying, and crushing or sieving to obtain granular products with the grain diameter of 0.05-0.8 mm.
, the mesh number of the green stone powder is 200-400 meshes.
, the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
6 parts of aluminum hydroxide;
8 parts of silicon micropowder for ceramics;
10 parts of talcum powder;
4 parts of sodium silicate;
10 parts of nano calcium carbonate;
2 parts of superfine calcium carbonate;
4 parts of Qingshi powder;
2 parts of graphite;
2 parts of white asphalt;
3 parts of calcium oxide.
, the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
9 parts of aluminum hydroxide;
12 parts of silicon micropowder for ceramics;
15 parts of talcum powder;
6 parts of sodium silicate;
13 parts of nano calcium carbonate;
6 parts of superfine calcium carbonate;
8 parts of Qing mountain flour;
4 parts of graphite;
5 parts of white asphalt;
5 parts of calcium oxide.
, the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
12 parts of aluminum hydroxide;
16 parts of silicon micropowder for ceramics;
20 parts of talcum powder;
8 parts of sodium silicate;
17 parts of nano calcium carbonate;
8 parts of superfine calcium carbonate;
15 parts of Qing stone powder;
6 parts of graphite;
8 parts of white asphalt;
and 8 parts of calcium oxide.
, the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
15 parts of aluminum hydroxide;
20 parts of silicon micropowder for ceramics;
25 parts of talcum powder;
10 parts of sodium silicate;
20 parts of nano calcium carbonate;
10 parts of superfine calcium carbonate;
20 parts of Qingshi powder;
8 parts of graphite;
10 parts of white asphalt;
10 parts of calcium oxide.
The second of the invention is to provide a method for using kinds of leak-proof plugging filling agent, and the technical scheme is that when in use, the leak-proof plugging filling agent is added into the plugging drilling fluid, and the addition amount is 2-15 tons per 100 prescriptions of leak-proof plugging drilling fluid.
And , adding 2, 6, 12 and 15 tons of leakage-proof plugging filling agent into every 100 prescriptions of the leakage-proof drilling fluid when the drilling fluid is used.
Compared with the prior art, the invention has the following advantages:
(1) the invention has the multifunctionality of physical filling function, chemical condensation function and the like, and has strong filling and plugging capability.
(2) The filling material has good filling capacity and plugging capacity, has good viscous flow characteristic when entering different types of cracks and pores, and has strong filling and supporting capacity; the materials with different grain diameters, such as the silica fume for ceramics, the superfine calcium carbonate, the nano calcium carbonate and the like, which are applied to the filling agent have very high strength and high temperature resistance, so the filling agent has very good filling effect after entering a leakage stratum, and plays a role of solid-phase support.
(3) The plugging slurry has the advantages of liquid-phase solidification effect, small influence of particle size on the performance of the plugging slurry, good fluidity and easy entering a leakage stratum; the sodium silicate used as the raw material is dissolved in the drilling fluid and then undergoes chemical reaction with cations such as calcium oxide and the like dissolved in water to perform the coagulation function, so that the liquid phase coagulation function is realized.
(4) Good fluidity, difficult sealing and easy entry into the deep part of the leakage passage.
(5) The compatibility is good, and the plugging agent can be matched with other plugging agents or plugging slurry, so that the success rate of plugging can be improved.
(6) The application range of is applicable to leakage stratum with different cracks and different porosities, and the plugging agent has obvious plugging and plugging effects.
(7) The construction is rapid and safe in operation, and complex accidents in the well can not be caused.
(8) No toxicity, no environmental pollution and easy harmless treatment after plugging construction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further illustrated in detail below with reference to the following embodiments.
It should be noted that all directional indications (such as up, down, left, right, front, and back … …) in the embodiments of the present invention are limited to relative positions on a given view, not absolute positions.
Thus, a feature defined as "", "second" may explicitly or implicitly include at least of that feature.
leak-proof plugging filler, which comprises the following raw materials in parts by weight:
6-15 parts of aluminum hydroxide;
8-20 parts of silicon micropowder for ceramics;
10-25 parts of talcum powder;
4-10 parts of sodium silicate;
10-20 parts of nano calcium carbonate;
2-10 parts of superfine calcium carbonate;
4-20 parts of Qingshi powder;
2-8 parts of graphite;
2-10 parts of white asphalt;
3-10 parts of calcium oxide;
wherein, the materials with different grain diameters, such as the micro silicon powder for ceramics, the superfine calcium carbonate, the nano calcium carbonate and the like, which are applied to the filling agent have very high strength and high temperature resistance, so the filling agent has very good filling effect after entering a leakage stratum, thereby playing a role of solid phase support. The sodium silicate used as the raw material is dissolved in the drilling fluid and then undergoes chemical reaction with cations such as calcium oxide and the like dissolved in water to perform the coagulation function, so that the liquid-phase coagulation function is realized.
Adding the materials into a container in sequence according to the parts by weight at normal temperature and normal pressure, mixing and stirring uniformly, drying, and crushing or sieving to obtain granular products with the grain diameter of 0.05-0.8 mm.
When in use, the leak-proof and leak-stopping filling agent is added into the leak-stopping drilling fluid, and the addition amount of the leak-proof and leak-stopping filling agent is 2-15 tons per 100 prescriptions of leak-stopping drilling fluid.
The formula of the plugging drilling fluid comprises: well slurry or (clear water 100+6-8% bentonite +0.3% sodium carbonate +0.2% PAM + barite) + (1% -2%) sawdust +3-5% cotton seed hull +2-3% walnut shell + +3% crude walnut shell +2-4% plugging agent while drilling +2-3% mica. The particle size of the walnut shell is 0.5-1mm, and the particle size of the coarse walnut shell is 2-5mm, which are the same as the following.
The above products are all commercially available, such as: aluminum hydroxide is produced by ZiboDongyu Sheng chemical Co., Ltd, silica powder for ceramics is produced by Anhui Fengxin Industrial materials Co., Ltd, talcum powder is produced by Shandong Linying Yinan Hao Tian talcum powder factory, sodium silicate is produced by Zhejiang Jiashan Jiang German Chang powder materials Co., Ltd, nano calcium carbonate is produced by Jiangxi Huaming nano calcium carbonate Co., Ltd, graphite is produced by Puyang Xin Yuan environmental protection technology Co., Ltd, white asphalt is produced by Shandong Shunyuan petroleum technology Co., Ltd, and calcium oxide is produced by Jinan Qiao chemical industry Co., Ltd.
Specific examples are given below:
example 1
Weighing the following raw materials in parts by weight: 6 parts of aluminum hydroxide, 8 parts of silica powder for ceramics, 10 parts of talcum powder, 4 parts of sodium silicate, 10 parts of nano calcium carbonate, 2 parts of superfine calcium carbonate (800-1200 meshes), 4 parts of Qing mountain flour (200-400 meshes), 2 parts of graphite, 2 parts of white asphalt and 3 parts of calcium oxide.
The raw materials are sequentially added into a container according to the proportion at normal temperature and normal pressure, are uniformly mixed and stirred, are dried, and are crushed or sieved into granular products with the grain diameter of 0.05 mm-0.8 mm by a double-screw forced granulator.
When the leak-proof plugging drilling fluid is used, the leak-proof plugging filling agent is added into the leak-proof drilling fluid, and the addition amount of the leak-proof plugging filling agent is 2 tons per 100 square of the leak-proof drilling fluid.
The formula of the plugging drilling fluid comprises: well slurry or (clear water 100+6-8% bentonite +0.3% sodium carbonate +0.2% PAM + barite) + (1% -2%) sawdust +3-5% cotton seed hull +2-3% walnut shell + +3% crude walnut shell +2-4% plugging agent while drilling +2-3% mica.
Example 2
Weighing the following raw materials in parts by weight: 9 parts of aluminum hydroxide, 12 parts of silica powder for ceramics, 15 parts of talcum powder, 6 parts of sodium silicate, 13 parts of nano calcium carbonate, 6 parts of superfine calcium carbonate (800-1200 meshes), 8 parts of Qing mountain flour (200-400 meshes), 4 parts of graphite, 5 parts of white asphalt and 5 parts of calcium oxide.
The raw materials are sequentially added into a container according to the proportion at normal temperature and normal pressure, are uniformly mixed and stirred, are dried, and are crushed or sieved into granular products with the grain diameter of 0.05 mm-0.8 mm by a double-screw forced granulator.
When the leak-proof plugging drilling fluid is used, the leak-proof plugging filling agent is added into the leak-proof drilling fluid, and 6 tons of the leak-proof plugging filling agent is added into every 100 prescriptions of the leak-proof drilling fluid.
The formula of the plugging drilling fluid comprises: well slurry or (clear water 100+6-8% bentonite +0.3% sodium carbonate +0.2% PAM + barite) + (1% -2%) sawdust +3-5% cotton seed hull +2-3% walnut shell + +3% crude walnut shell +2-4% plugging agent while drilling +2-3% mica.
Example 3
Weighing the following raw materials in parts by weight: 12 parts of aluminum hydroxide, 16 parts of silica powder for ceramics, 20 parts of talcum powder, 8 parts of sodium silicate, 17 parts of nano calcium carbonate, 8 parts of superfine calcium carbonate (800-1200 meshes), 15 parts of Qing mountain flour (200-400 meshes), 6 parts of graphite, 8 parts of white asphalt and 8 parts of calcium oxide.
The raw materials are sequentially added into a container according to the proportion at normal temperature and normal pressure, are uniformly mixed and stirred, are dried, and are crushed or sieved into granular products with the grain diameter of 0.05 mm-0.8 mm by a double-screw forced granulator.
When in use, the leakage-proof plugging filling agent is added into the plugging drilling fluid, and the addition amount of the leakage-proof plugging filling agent is 12 tons per 100 prescriptions of the plugging drilling fluid.
The formula of the plugging drilling fluid comprises: well slurry or (clear water 100+6-8% bentonite +0.3% sodium carbonate +0.2% PAM + barite) + (1% -2%) sawdust +3-5% cotton seed hull +2-3% walnut shell + +3% crude walnut shell +2-4% plugging agent while drilling +2-3% mica.
Example 4
Weighing the following raw materials in parts by weight: 15 parts of aluminum hydroxide, 20 parts of silica powder for ceramics, 25 parts of talcum powder, 10 parts of sodium silicate, 20 parts of nano calcium carbonate, 10 parts of superfine calcium carbonate (800-1200 meshes), 20 parts of Qing mountain flour (200-400 meshes), 8 parts of graphite, 10 parts of white asphalt and 10 parts of calcium oxide.
The raw materials are sequentially added into a container according to the proportion at normal temperature and normal pressure, are uniformly mixed and stirred, are dried, and are crushed or sieved into granular products with the grain diameter of 0.05 mm-0.8 mm by a double-screw forced granulator.
When the leak-proof plugging drilling fluid is used, the leak-proof plugging filling agent is added into the leak-proof drilling fluid, and the addition amount of the leak-proof plugging filling agent is 15 tons per 100 square of the leak-proof drilling fluid.
The formula of the plugging drilling fluid comprises: well slurry or (clear water 100+6-8% bentonite +0.3% sodium carbonate +0.2% PAM + barite) + (1% -2%) sawdust +3-5% cotton seed hull +2-3% walnut shell + +3% crude walnut shell +2-4% plugging agent while drilling +2-3% mica.
The leakage-preventing and plugging fillers prepared in the above examples 1 to 4 were named TRS-DFJC type leakage-preventing and plugging fillers by Dongyote Petroleum technologies Co.
API (application program interface) filtration loss of the leakage-proof plugging filler is measured by using a medium-pressure filtration loss instrument, HTHP filtration loss at the temperature of 150 ℃ is measured by using a high-temperature high-pressure filtration loss instrument, 20-40 meshes of sand is selected by using a visual medium-pressure sand bed filtration loss instrument, the invasion depth of the sand is measured, and the filling performance of the leakage-proof plugging filler is evaluated by series experiments, which are detailed in table 1 (the technical performance characterization of the leakage-proof plugging filler).
TABLE 1 characterization of filling Properties of leak-proof plugging Filler
As can be seen from Table 1, before the leak-proof plugging filling agent of the invention is added, the API filtration loss of the plugging drilling fluid is 16.4mL, the HTHP filtration loss under the condition of 150 ℃ is 52 mL, the visual sand bed is totally invaded, after the leak-proof plugging filling agent of the invention with the total amount of the leak-proof drilling fluid being 2 percent is added, the API filtration loss of the plugging drilling fluid is 4.6 mL, the HTHP filtration loss under the condition of 150 ℃ is 31 mL, and the visual sand bed is invaded by 14 cm; after the leak-proof leak-stopping filler of the invention with 6 percent of the total amount of the leak-stopping drilling fluid is added, the API filtration loss of the leak-stopping drilling fluid is 4mL, the HTHP filtration loss under the condition of 150 ℃ is 22 mL, and a visual sand bed is immersed by 11 cm; after the leak-proof leak-stopping filler of the invention with the total amount of leak-stopping drilling fluid being 12 percent is added, the API filtration loss of the leak-stopping drilling fluid is 3.6 mL, the HTHP filtration loss under the condition of 150 ℃ is 16 mL, and the invasion of a visual sand bed is 9 cm; after the leak-proof leak-stopping filler of the invention is added, the total amount of the leak-stopping drilling fluid is 15 percent, the API filtration loss of the leak-stopping drilling fluid is 3.2 mL, the HTHP filtration loss under the condition of 150 ℃ is 9mL, and the invasion of a sand bed is 6 cm. The experimental results show that the addition of the leak-proof plugging filling agent of the invention obviously reduces the API filtration loss, HTHP filtration loss and the visual sand bed invasion depth, and the leak-proof plugging filling agent of the invention has good filling effect.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention, and the contents of the changes still fall within the scope of the present invention.
Claims (8)
1, kinds of leak-proof plugging filler, which is characterized in that the leak-proof plugging filler comprises the following raw materials by weight:
6-15 parts of aluminum hydroxide;
8-20 parts of silicon micropowder for ceramics;
10-25 parts of talcum powder;
4-10 parts of sodium silicate;
10-20 parts of nano calcium carbonate;
2-10 parts of superfine calcium carbonate;
4-20 parts of Qingshi powder;
2-8 parts of graphite;
2-10 parts of white asphalt;
3-10 parts of calcium oxide;
the mesh number of the superfine calcium carbonate is 800-1200 meshes;
the preparation method of the leak-proof plugging filler comprises the following steps: adding the materials into a container in sequence according to the parts by weight at normal temperature and normal pressure, mixing and stirring uniformly, drying, and crushing or sieving to obtain granular products with the grain diameter of 0.05-0.8 mm.
2. A leak-proof plugging filler as defined in claim 1, which is characterized in that: the mesh number of the green stone powder is 200-400 meshes.
3. A leak-proof plugging filler as defined in claim 1, which is characterized in that: the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
6 parts of aluminum hydroxide;
8 parts of silicon micropowder for ceramics;
10 parts of talcum powder;
4 parts of sodium silicate;
10 parts of nano calcium carbonate;
2 parts of superfine calcium carbonate;
4 parts of Qingshi powder;
2 parts of graphite;
2 parts of white asphalt;
3 parts of calcium oxide.
4. A leak-proof plugging filler as defined in claim 1, which is characterized in that: the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
9 parts of aluminum hydroxide;
12 parts of silicon micropowder for ceramics;
15 parts of talcum powder;
6 parts of sodium silicate;
13 parts of nano calcium carbonate;
6 parts of superfine calcium carbonate;
8 parts of Qing mountain flour;
4 parts of graphite;
5 parts of white asphalt;
5 parts of calcium oxide.
5. A leak-proof plugging filler as defined in claim 1, which is characterized in that: the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
12 parts of aluminum hydroxide;
16 parts of silicon micropowder for ceramics;
20 parts of talcum powder;
8 parts of sodium silicate;
17 parts of nano calcium carbonate;
8 parts of superfine calcium carbonate;
15 parts of Qing stone powder;
6 parts of graphite;
8 parts of white asphalt;
and 8 parts of calcium oxide.
6. A leak-proof plugging filler as defined in claim 1, which is characterized in that: the leak-proof plugging filling agent comprises the following raw materials in parts by weight:
15 parts of aluminum hydroxide;
20 parts of silicon micropowder for ceramics;
25 parts of talcum powder;
10 parts of sodium silicate;
20 parts of nano calcium carbonate;
10 parts of superfine calcium carbonate;
20 parts of Qingshi powder;
8 parts of graphite;
10 parts of white asphalt;
10 parts of calcium oxide.
The use method of 7, leak-proof plugging filling agents is characterized in that when in use, the leak-proof plugging filling agent of any of the claims 1-7 is added into the plugging drilling fluid, and the addition amount is 2-15 tons of leak-proof plugging filling agent per 100 prescriptions of the plugging drilling fluid.
8. The use method of the leakage-proof plugging filling agent according to claim 7, wherein the addition amount of the leakage-proof plugging filling agent is 2, 6, 12 and 15 tons per 100 prescriptions of the leakage-proof drilling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911321294.7A CN110734748A (en) | 2019-12-20 | 2019-12-20 | leak-proof plugging filling agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911321294.7A CN110734748A (en) | 2019-12-20 | 2019-12-20 | leak-proof plugging filling agent |
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| CN110734748A true CN110734748A (en) | 2020-01-31 |
Family
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| CN201911321294.7A Withdrawn CN110734748A (en) | 2019-12-20 | 2019-12-20 | leak-proof plugging filling agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113548839A (en) * | 2020-04-26 | 2021-10-26 | 中石化石油工程技术服务有限公司 | Plugging agent based on geopolymer and preparation method |
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| WO2007092150A2 (en) * | 2006-02-02 | 2007-08-16 | Baker Hughes Incorporated | High temperature filtration control using water based drilling fluid systems comprising water soluble polymers |
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| CN113548839B (en) * | 2020-04-26 | 2023-03-10 | 中石化石油工程技术服务有限公司 | Plugging agent based on geopolymer and preparation method |
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Application publication date: 20200131 |