基于Alferd修正模型的高密度钻井液性能调控

王帝; 邱正松; 苗海龙; 耿铁; 钟汉毅; 赵欣; 范立君

doi:10.12358/j.issn.1001-5620.2022.06.005

基于Alferd修正模型的高密度钻井液性能调控

doi: 10.12358/j.issn.1001-5620.2022.06.005

王帝^1,,
邱正松^1, ,,
苗海龙^{1, 2},
耿铁²,
钟汉毅¹,
赵欣¹,
范立君³

1.
中国石油大学(华东)石油工程学院, 山东青岛 266580
2.
中海油田服务股份有限公司油田化学研究院, 河北三河 065200
3.
中国南海-麦克巴泥浆有限公司, 广东深圳 518000

基金项目: 国家自然科学基金项目“裂缝地层致密承压封堵机理与温敏智能堵漏新方法研究”、“基于亚临界水热反应的超高温水基钻井液滤失造壁性调控方法”（ 51974354，52174013）、国家重点研发计划“井筒稳定性闭环响应机制与智能调控方法”（2019YFA0708303）资助

详细信息

作者简介:
王帝，在读博士研究生，现在主要从事钻井液技术研究。电话 13061359957；E-mail：674472705@qq.com

通讯作者:
邱正松，教授，博士生导师。E-mail：qiuzs63@sina.com

中图分类号: TE254.1
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出版历程
- 收稿日期: 2022-04-13
- 修回日期: 2022-05-23
- 刊出日期: 2022-11-30

Study on Property Control of High Density Drilling Fluids Based on Modified Alferd Model

1.
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580
2.
Oilfield Chemistry Research Institute of CNOOC Oilfield Services Co., Ltd., Sanhe, Hebei 065200
3.
Magcobar Mud Corporatiom Ltd, Shenzhen, Guangdong 518000

摘要

摘要: 针对深井高温高密度钻井液性能难以调控的问题，探讨了重晶石级配对高密度钻井液流变性和滤失性能的影响规律及作用机理。基于分形理论，对粉体堆积常用的Alfred方程进行修正，建立了适用于重晶石级配加重的粒度分布模型，计算了重晶石级配的理论最优配比，并通过实验验证了修正模型的可行性。实验表明，修正后的Alferd模型可以指导高密度钻井液的颗粒级配设计，确定加重材料最优级配比例。使用合理级配的重晶石加重，可以降低钻井液内部颗粒间的碰撞概率及储能模量，削弱体系的网架结构和流动阻力，并使重晶石的粒度分布更加合理，有利于形成致密泥饼，从而改善钻井液的流变性能和滤失性能。
- 钻井液 /
- 重晶石 /
- Alferd模型 /
- 粒度分布 /
- 流变性能 /
- 滤失性能
Abstract: The effect of barite particle sizing on the rheology and filtration property of a high density drilling fluid and the mechanisms of this effect are investigated to try to solve the difficulties encountered in controlling the performance of a high density drilling fluid used in drilling a deep high temperature well. Based on the fractal theory, the Alfred equation, which is generally used in powder packing calculation, was modified to establish a particle size distribution model suitable for weighting a drilling fluid with sized barite particles, the theoretical optimal quantity ratio of the sized barite particles was calculated, and the feasibility of the modified model was verified by experiment. Laboratory experiment shows that the modified Alferd model can be used to guide the design of the sizing of particles used to weight a drilling fluid and to determine the optimum quantity ratio of particles with different sizes. Weighting a drilling fluid with reasonably sized barite particles can reduce the probability of collision between particles in the drilling fluid and the storage modulus, weaken the network structure and the flow resistance of the system, and make the particle size distribution of barite more appropriate; it is beneficial to the formation of dense mud cakes, and to the improvement of drilling fluid rheology and filtration property.
- Drilling fluid /
- Barite /
- Alferd model /
- Particle size distribution /
- Rheological property /
- Filtration property

HTML全文

图 1 不同目数重晶石的级配曲线及线性拟合

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图 2 200目与1250目重晶石级配加重对实验浆滤失性能的影响

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图 3 200目与3000目重晶石级配加重对实验浆滤失性能的影响

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图 4 不同重晶石加重实验浆的振幅扫描曲线

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图 5 不同目数重晶石级配加重实验浆的滤饼渗透率

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图 6 不同重晶石级配加重实验浆的滤饼剖面微观形貌（2000倍）

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图 7 不同密度实验浆的重晶石比表面积

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图 8 不同粒径重晶石级配实验浆的比表面积

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表 1 不同粒径重晶石的粒度分布

粒径/目	D₁₀/μm	D₅₀/μm	D₉₀/μm
200	1.881	11.530	39.500
1250	1.662	3.879	18.420
3000	0.365	1.593	4.413

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表 2 200目与1250目重晶石级配加重对实验浆流变性的影响

200目重晶石/ %	老化条件（180 ℃/16 h）	AV/ mPa·s	PV/ mPa·s	YP/ Pa	Gel/ Pa/Pa
100	老化前	80.0	62	18.0	3.5/8.5
100	老化后	70.0	64	6.0	2.5/6.0
80	老化前	77.0	61	16.0	5.0/8.5
80	老化后	87.0	60	7.0	2.7/6.5
70	老化前	74.5	66	8.5	4.0/8.0
70	老化后	65.0	59	6.0	2.7/6.0
50	老化前	68.5	58	10.5	4.0/10.0
50	老化后	58.0	52	6.0	2.7/5.0
30	老化前	72.0	60	12.0	4.0/8.0
30	老化后	59.5	53	6.5	2.5/5.0
20	老化前	76.0	62	14.0	6.0/8.5
20	老化后	56.5	52	4.5	2.5/4.5
0	老化前	84.0	68	16.0	8.0/12.5
0	老化后	63.5	60	3.5	4.5/8.0
注：流变性能测试温度为49 ℃；中压和高温高压滤失量测试条件分别为室温、0.7 MPa和150 ℃、3.5 MPa

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表 3 200目与3000目重晶石级配加重对实验浆流变性的影响

200目重晶石/ %	老化条件（180℃/16h）	AV/ mPa·s	PV/ mPa·s	YP/ Pa	Gel/ Pa/Pa
100	老化前	80.0	62	18.0	3.5/8.5
100	老化后	70.0	64	6.0	2.5/6.0
80	老化前	64.0	52	12.0	4.0/8.0
80	老化后	50.0	44	6.0	2.5/4.5
70	老化前	60.0	49	11.0	4.0/8.0
70	老化后	49.0	42	7.0	5.5/9.5
50	老化前	61.5	49	12.5	3.5/7.0
50	老化后	49.5	40	9.5	3.5/7.0
30	老化前	76.0	62	14.0	6.0/8.5
30	老化后	65.5	52	12.0	2.5/4.5
20	老化前	93.0	63	30.0	16.0/25.5
20	老化后	65.5	48	17.5	11.5/23.5
注：当3000目加量为100%时，黏度过高无法测量；流变性能测试温度为49 ℃；中压和高温高压滤失量测试条件分别为室温、0.7 MPa和150 ℃、3.5 MPa

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