PROCESSING OF NATURAL RENEWABLE MATERIALS INTO GROUTING COMPOUNDS FOR WATER SHUTOFF IN OIL WELLS

IF 0.3 Q4 ENGINEERING, CHEMICAL

Chemical and Petroleum Engineering Pub Date : 2023-08-17 DOI:10.17122/ngdelo-2023-3-17-26

A. Telin, A.A. Politov, A.V. Kornilov, L. Lenchenkova, R. Yakubov, R.M. Safuanova

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Abstract

Water shutoff in oil wells operated in naturally fractured reservoirs is one of the most complex types of geological and technical operations in the oil industry related to repair and insulation works, the success rate of which does not exceed 35–60 %. In order to increase the efficiency of such operations, a set of sealing compositions based on the processing of natural materials, such as sand, peat, rice husk is proposed. Using the methods of mechanochemical activation, it was possible to dissolve sand in a low-concentrated alkali and obtain a sealing compound reinforced with undissolved sand particles by gelating the resulting sodium silicate. When combining mechanically activated sand and peat, a hybrid sealing material with the ultimate shear stress 27.7±1.2 Pa was obtained. The same approach made it possible to activate rice husks containing up to 20 % biogenic silicon dioxide and obtain a hybrid sealing material with the ultimate shear stress of 16.2 ± 0.6 Pa. This makes it possible to consider materials from natural and plant-renewable raw materials very promising for repair and insulation work.

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天然可再生材料加工成油井堵水注浆合剂的研究

天然裂缝性油藏的油井堵水是石油工业中与修复和保温工程相关的最复杂的地质和技术作业之一，其成功率不超过35 - 60%。为了提高此类操作的效率，提出了一套基于砂、泥炭、稻壳等天然材料加工的密封组合物。利用机械化学活化的方法，可以将砂溶解在低浓度的碱中，并通过凝胶化所得的水玻璃获得一种由未溶解的砂颗粒增强的密封化合物。将机械活化砂与泥炭混合后，得到了一种极限剪应力为27.7±1.2 Pa的混合密封材料。同样的方法可以激活含有高达20%生物二氧化硅的稻壳，并获得最终剪切应力为16.2±0.6 Pa的杂交密封材料。这使得考虑天然和植物可再生原料的材料成为可能，这些材料非常有希望用于修复和绝缘工作。

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来源期刊

Chemical and Petroleum Engineering ENGINEERING, CHEMICAL-

CiteScore

0.60

自引率

33.30%

发文量

129

期刊介绍： Chemical and Petroleum Engineering publishes the latest research on Russian innovations in the field. Articles discuss developments in machinery and equipment, construction and design, processes, materials and corrosion control, and equipment-manufacturing technology. Chemical and Petroleum Engineering is a translation of the Russian journal Khimicheskoe i Neftegazovoe Mashinostroenie. The Russian Volume Year is published in English from April. All articles are peer-reviewed.