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CN117025186A - Temperature-resistant penetrating agent for well drilling and preparation method thereof - Google Patents

Temperature-resistant penetrating agent for well drilling and preparation method thereof Download PDF

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Publication number
CN117025186A
CN117025186A CN202310971961.6A CN202310971961A CN117025186A CN 117025186 A CN117025186 A CN 117025186A CN 202310971961 A CN202310971961 A CN 202310971961A CN 117025186 A CN117025186 A CN 117025186A
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parts
penetrating agent
drilling
xingzuan
wen
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Inventor
万伟
袁翊
胡宗建
陈智
吴义
赵赓
葛炼
刘永诚
海波
程凯
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Chongqing Weineng Drilling Aids Co ltd
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Chongqing Weineng Drilling Aids Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02Well-drilling compositions
    • C09K8/03Specific additives for general use in well-drilling compositions
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/02Spotting, i.e. using additives for releasing a stuck drill
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/34Lubricant additives

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Earth Drilling (AREA)

Abstract

本发明公开了一种耐温型钻井用渗透剂。其包括以下重量份的组分:油相10~30份、酸液20~40份、增粘剂0.1~0.5份、海藻酸钠1~5份、钙盐2~5份、表面活性剂5~10份,以及过氧化叔丁醇0.1~1份。本发明制备得到的渗透剂在各组分的协同作用下,能够快速有效的使钻具和黏附的泥饼完全脱离。The invention discloses a temperature-resistant penetrant for drilling. It includes the following components by weight: 10-30 parts of oil phase, 20-40 parts of acid solution, 0.1-0.5 parts of tackifier, 1-5 parts of sodium alginate, 2-5 parts of calcium salt, and 5 parts of surfactant ~10 parts, and 0.1~1 part of tert-butyl peroxide. The penetrant prepared by the invention can quickly and effectively separate the drilling tool and the adhered mud cake completely under the synergistic effect of each component.

Description

一种耐温型钻井用渗透剂及其制备方法A kind of temperature-resistant drilling penetrant and its preparation method

技术领域Technical field

本发明属于渗透剂技术领域,具体涉及一种耐温型钻井用渗透剂及其制备方法。The invention belongs to the technical field of penetrants, and specifically relates to a temperature-resistant drilling penetrant and a preparation method thereof.

背景技术Background technique

在钻井过程中,由于地质和钻井液性能以及司钻的原因,当钻杆和钻探套管在孔内运转时或当钻管被提升时会发生卡钻问题。在大多数钻井作业过程中,由钻探泥浆圆柱体施加的流体静压大于地层流体压力。在可渗透地层中,泥浆滤液从钻孔流入岩石中并形成滤饼。在滤饼两侧存在压力差,它等于在泥浆柱的压力和地层的压力之间的差异。当钻杆处在钻孔的中心时,由于泥浆失去平衡而引起的流体静压将作用于其周围的各个方向。然而,如果该钻杆触碰所述滤饼,则失衡的泥浆将推动钻杆进一步深入到滤饼中,因此增加了在钻杆和滤饼之间的接触面积。滤液仍然被从钻杆和地层之间的滤饼中挤出,因此使滤饼收缩并使钻杆进一步穿入滤饼从而进一步增加了接触面积。如果该差压足够高并作用于足够大的面积上,则该钻杆可能被卡住。During the drilling process, due to geology and drilling fluid properties as well as driller reasons, drill pipe sticking problems can occur when the drill pipe and drilling casing are running in the hole or when the drill pipe is lifted. During most drilling operations, the hydrostatic pressure exerted by the drilling mud cylinder is greater than the formation fluid pressure. In permeable formations, mud filtrate flows from the borehole into the rock and forms a filter cake. There is a pressure differential across the filter cake, which is equal to the difference between the pressure in the mud column and the pressure in the formation. When the drill pipe is at the center of the borehole, the hydrostatic pressure caused by the mud being out of balance will act in all directions around it. However, if the drill pipe touches the filter cake, the unbalanced mud will push the drill pipe further into the filter cake, thus increasing the contact area between the drill pipe and the filter cake. The filtrate is still squeezed out of the filter cake between the drill pipe and the formation, thus shrinking the filter cake and allowing the drill pipe to penetrate further into the filter cake thereby further increasing the contact area. If the differential pressure is high enough and acts over a large enough area, the drill pipe may become stuck.

发明内容Contents of the invention

针对现有技术中的上述不足,本发明提供一种耐温型钻井用渗透剂及其制备方法,可有效解决现有钻具在钻井时出现的被卡住的问题。In view of the above-mentioned deficiencies in the prior art, the present invention provides a temperature-resistant drilling penetrant and a preparation method thereof, which can effectively solve the problem of existing drilling tools getting stuck during drilling.

为实现上述目的,本发明解决其技术问题所采用的技术方案是:In order to achieve the above objects, the technical solutions adopted by the present invention to solve the technical problems are:

一种耐温型钻井用渗透剂,包括以下重量份的组分:A temperature-resistant drilling penetrant, including the following components by weight:

油相10~30份、酸液20~40份、增粘剂0.1~0.5份、海藻酸钠1~5份、钙盐2~5份、表面活性剂5~10份,以及过氧化叔丁醇0.1~1份。10 to 30 parts of oil phase, 20 to 40 parts of acid solution, 0.1 to 0.5 parts of tackifier, 1 to 5 parts of sodium alginate, 2 to 5 parts of calcium salt, 5 to 10 parts of surfactant, and tert-butyl peroxide Alcohol 0.1 to 1 part.

进一步地,包括以下重量份的组分:Further, it includes the following components by weight:

油相30份、酸液22份、增粘剂0.5份、海藻酸钠2份、钙盐2份、表面活性剂5份,以及过氧化叔丁醇0.1份。30 parts of oil phase, 22 parts of acid solution, 0.5 parts of tackifier, 2 parts of sodium alginate, 2 parts of calcium salt, 5 parts of surfactant, and 0.1 part of tert-butyl peroxide.

进一步地,油相为柴油、白油、溶剂油或煤油。Further, the oil phase is diesel oil, white oil, solvent oil or kerosene.

进一步地,酸液为石油酸。Further, the acid liquid is petroleum acid.

进一步地,钙盐为氯化钙或碳酸钙。Further, the calcium salt is calcium chloride or calcium carbonate.

进一步地,表面活性剂为明胶、磷脂或山梨糖醇。Further, the surfactant is gelatin, phospholipid or sorbitol.

进一步地,增粘剂为二聚酸或脂肪酸盐。Further, the tackifier is dimer acid or fatty acid salt.

上述耐温型钻井用渗透剂的制备方法,按配方将各组分混合均匀即可。The preparation method of the above-mentioned temperature-resistant drilling penetrant is to mix each component evenly according to the formula.

本发明的有益效果为:The beneficial effects of the present invention are:

1、本发明的钻井液用渗透剂的工作原理是,当渗透剂溶液浸泡在卡钻位置时,渗透剂中的各组分协同增效,相互作用,进入钻具和黏附卡钻的泥饼中,在表面活性剂的作用下,使环境中的颗粒表面润湿为亲油性,使钻具与泥饼之间形成的正电离场得以降低,减少它们之间的吸附力,从而使钻具与泥饼脱离,脱离的泥饼还有很强的网络胶体结构。这时,再通过过氧化叔丁醇的作用,降低、破坏其胶体结构,成为乳状物,从而彻底使钻具和黏附的泥饼完全脱离。1. The working principle of the penetrant for drilling fluid of the present invention is that when the penetrant solution is soaked in the stuck drill position, the components in the penetrant synergize and interact with each other to enter the drilling tool and the mud cake that adheres to the stuck drill. In the process, under the action of surfactant, the surface of particles in the environment is moistened to be lipophilic, which reduces the positive ionization field formed between the drilling tool and the mud cake, reducing the adsorption force between them, thereby making the drill The tool is separated from the mud cake, and the separated mud cake also has a strong network colloid structure. At this time, through the action of tert-butyl peroxide, its colloidal structure is reduced and destroyed, turning it into an emulsion, thereby completely detaching the drilling tool from the adhered mud cake.

2、油相与酸液在配方中能够形成稳定的乳液,具有较高的粘度和较好的缓速性,同时,油相也能起到剥离剂的作用。2. The oil phase and acid solution in the formula can form a stable emulsion with higher viscosity and better retarding properties. At the same time, the oil phase can also act as a stripper.

3、海藻酸钠和钙盐原位交联,能够提升产物在低剪切速率下的粘度,并且,表面活性剂还能够产生细泡沫,产生的细泡沫能够有效的密封该地层,从而防止钻具再次被卡住。3. In-situ cross-linking of sodium alginate and calcium salt can increase the viscosity of the product at low shear rates, and the surfactant can also produce fine foam, which can effectively seal the formation, thereby preventing drilling. The tool got stuck again.

具体实施方式Detailed ways

下面对本发明的具体实施方式进行描述,以便于本技术领域的技术人员理解本发明,但应该清楚,本发明不限于具体实施方式的范围,对本技术领域的普通技术人员来讲,只要各种变化在所附的权利要求限定和确定的本发明的精神和范围内,这些变化是显而易见的,一切利用本发明构思的发明创造均在保护之列。The specific embodiments of the present invention are described below to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the technical field, as long as various changes These changes are obvious within the spirit and scope of the invention as defined and determined by the appended claims, and all inventions and creations utilizing the concept of the invention are protected.

实施例1Example 1

一种耐温型钻井用渗透剂,包括以下重量份的组分:A temperature-resistant drilling penetrant, including the following components by weight:

柴油10份、石油酸20份、脂肪酸纳0.1份、海藻酸钠1份、碳酸钙5份、磷脂5份,以及过氧化叔丁醇0.1份。10 parts of diesel, 20 parts of petroleum acid, 0.1 part of sodium fatty acid, 1 part of sodium alginate, 5 parts of calcium carbonate, 5 parts of phospholipids, and 0.1 part of tert-butyl peroxide.

按配方将各组分混合均匀即可得到该渗透剂。The penetrating agent can be obtained by mixing each component evenly according to the formula.

实施例2Example 2

一种耐温型钻井用渗透剂,包括以下重量份的组分:A temperature-resistant drilling penetrant, including the following components by weight:

柴油30份、石油酸22份、脂肪酸纳0.5份、海藻酸钠2份、碳酸钙2份、磷脂5份,以及过氧化叔丁醇0.1份。30 parts of diesel, 22 parts of petroleum acid, 0.5 parts of sodium fatty acid, 2 parts of sodium alginate, 2 parts of calcium carbonate, 5 parts of phospholipids, and 0.1 part of tert-butyl peroxide.

按配方将各组分混合均匀即可得到该渗透剂。The penetrating agent can be obtained by mixing each component evenly according to the formula.

实施例3Example 3

一种耐温型钻井用渗透剂,包括以下重量份的组分:A temperature-resistant drilling penetrant, including the following components by weight:

柴油30份、石油酸40份、脂肪酸纳0.5份、海藻酸钠5份、碳酸钙5份、磷脂10份,以及过氧化叔丁醇1份。30 parts of diesel, 40 parts of petroleum acid, 0.5 parts of sodium fatty acid, 5 parts of sodium alginate, 5 parts of calcium carbonate, 10 parts of phospholipids, and 1 part of tert-butyl peroxide.

按配方将各组分混合均匀即可得到该渗透剂。The penetrating agent can be obtained by mixing each component evenly according to the formula.

对比例1Comparative example 1

与实施例2相比,缺少海藻酸钠和碳酸钙,其余均与实施例2相同。Compared with Example 2, sodium alginate and calcium carbonate are missing, and the rest are the same as Example 2.

对比例2Comparative example 2

与实施例2相比,缺少表面活性剂,其余均与实施例2相同。Compared with Example 2, surfactant is missing, and the rest are the same as Example 2.

对比例3Comparative example 3

由辛醇吧、顺丁烯二酸酐等原料经酯化反应和磺化反应制备而成。It is prepared from octanol, maleic anhydride and other raw materials through esterification reaction and sulfonation reaction.

实验例Experimental example

1、测量实施例1~3和对比例1~3的气泡沫密度,其结果见表1。1. Measure the air foam density of Examples 1 to 3 and Comparative Examples 1 to 3. The results are shown in Table 1.

表1气泡沫密度Table 1 Air foam density

由表1数据可知,本申请实施例制备得到的渗透剂能够产生细泡沫。It can be seen from the data in Table 1 that the penetrating agent prepared in the embodiment of the present application can produce fine foam.

2、摩阻检测2. Friction detection

(1)实验卡钻泥浆配制:取2000mL水、240g钠膨润土、8g碳酸钠置于搅拌机中进行搅拌混合,在室温下氧化20~24h后,调节其密度为1.80g/cm3即可;(1) Preparation of experimental stuck drill mud: Take 2000mL water, 240g sodium bentonite, and 8g sodium carbonate and put them in a mixer to stir and mix. After oxidation at room temperature for 20 to 24 hours, adjust its density to 1.80g/ cm3 ;

(2)操作步骤如下:将试验卡钻泥浆放入解卡分析仪的泥浆杯中,在4.0MPa的压差下使卡钻泥浆滤失50min,测定形成的试验卡钻泥浆泥饼与粘附盘之间的摩阻,放出泥浆杯中剩余泥浆,注满本申请实施例和对比例制备得到的渗透剂,在4.0MPa压差下浸泡泥饼,定时(每隔4h)测定泥饼摩阻,直至摩阻为零(粘附盘弹起)。其结果见表2。(2) The operation steps are as follows: Put the test stuck drill mud into the mud cup of the stuck release analyzer, make the stuck drill mud filter out for 50 minutes under a pressure difference of 4.0MPa, and measure the formed test stuck drill mud cake and adhesion To determine the friction between the disks, release the remaining mud in the mud cup, fill it with the penetrant prepared in the examples and comparative examples of this application, soak the mud cake under a pressure difference of 4.0MPa, and measure the friction of the mud cake regularly (every 4 hours). , until the friction is zero (the adhesive disc bounces up). The results are shown in Table 2.

表2浸泡后摩阻/Nm-2 Table 2 Friction resistance/Nm -2 after immersion

浸泡时间(h)Soaking time (h) 实施例1Example 1 实施例2Example 2 实施例3Example 3 对比例1Comparative example 1 对比例2Comparative example 2 对比例3Comparative example 3 00 421421 421421 421421 421421 421421 421421 44 356356 342342 364364 376376 410410 421421 88 168168 176176 182182 214214 395395 400400 1212 7474 6868 7676 8383 364364 384384 1616 00 00 00 4646 236236 357357 2020 00 00 00 00 170170 332332 24twenty four 00 00 00 00 8585 294294

从表2可知,试验卡钻泥浆形成的泥饼浸泡于实施例1~3和对比例1~3制备得到的渗透剂中,随着浸泡时间的增长,实施例1~3的摩阻逐渐降低,最后变为零,说明本申请制备得到的渗透剂具有较强的渗透能力,都够浸蚀剥落泥饼。It can be seen from Table 2 that the mud cake formed by the test drilling mud is soaked in the penetrant prepared in Examples 1 to 3 and Comparative Examples 1 to 3. As the soaking time increases, the friction resistance of Examples 1 to 3 gradually decreases. , finally becomes zero, indicating that the penetrant prepared in this application has strong penetrating ability, which is enough to erode and peel off the mud cake.

3、JK型解卡液分析仪测试实施例1~3和对比例1~3的解卡时间,其结果见表3。3. The JK type jamming solution analyzer was used to test the jamming time of Examples 1 to 3 and Comparative Examples 1 to 3. The results are shown in Table 3.

表3解卡时间Table 3 Card release time

实施例1Example 1 实施例2Example 2 实施例3Example 3 对比例1Comparative example 1 对比例2Comparative example 2 对比例3Comparative example 3 解卡时间(min)Card release time (min) 3939 3232 3838 4848 6565 8888

由表3数据可知,本申请制备得到的渗透剂能够快速有效的发挥解卡作用,解卡时间最短。It can be seen from the data in Table 3 that the penetrant prepared by the present application can quickly and effectively exert the jam-relieving effect, and the jam-release time is the shortest.

Claims (8)

1. The heat-resistant penetrating agent for drilling is characterized by comprising the following components in parts by weight:
10-30 parts of oil phase, 20-40 parts of acid liquor, 0.1-0.5 part of tackifier, 1-5 parts of sodium alginate, 2-5 parts of calcium salt, 5-10 parts of surfactant and 0.1-1 part of tert-butyl peroxide.
2. The Wen Xingzuan well penetrating agent of claim 1, comprising the following components in parts by weight:
30 parts of oil phase, 22 parts of acid liquor, 0.5 part of tackifier, 2 parts of sodium alginate, 2 parts of calcium salt, 5 parts of surfactant and 0.1 part of tert-butyl peroxide.
3. The Wen Xingzuan well penetrating agent of claim 1 or 2, wherein the oil phase is diesel, white oil, solvent oil or kerosene.
4. A Wen Xingzuan well penetrating agent according to claim 1 or 2, wherein the acid is petrolatum.
5. A Wen Xingzuan well penetrating agent according to claim 1 or 2, characterised in that the calcium salt is calcium chloride or calcium carbonate.
6. A Wen Xingzuan well penetrating agent according to claim 1 or 2, characterised in that the surfactant is gelatin, phospholipid or sorbitol.
7. A Wen Xingzuan well penetrating agent according to claim 1 or 2, wherein the tackifier is a dimer acid or fatty acid salt.
8. The method for preparing the heat-resistant penetrating agent for well drilling according to any one of claims 1 to 7, which is characterized in that the components are uniformly mixed according to a formula.
CN202310971961.6A 2023-08-03 2023-08-03 Temperature-resistant penetrating agent for well drilling and preparation method thereof Pending CN117025186A (en)

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CN117511518A (en) * 2023-11-06 2024-02-06 中国石油天然气集团有限公司 Temperature-resistant drilling penetrant and its preparation method and application

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