本文選題：儲(chǔ)氣庫　切入點(diǎn)：固井　出處：《鉆井液與完井液》2017年03期 　論文類型：期刊論文

【摘要】：針對(duì)儲(chǔ)氣庫生產(chǎn)對(duì)水泥石韌性的特殊要求,優(yōu)選了粒徑為0.15~0.18 mm經(jīng)表面改性的橡膠粉作為彈性材料,聚丙烯纖維作為增韌材料,通過實(shí)驗(yàn)確定彈性材料和增韌材料的最佳加量分別為3.0%和0.1%,并配合使用PVA膠乳類降失水劑,改善水泥石脆性,提高耐沖擊能力及抗折能力,滿足水泥環(huán)頻繁高壓注采條件下的長期密封性。綜合評(píng)價(jià)了增韌水泥石的彈性模量、抗折強(qiáng)度、抗壓及膠結(jié)強(qiáng)度、滲透率及應(yīng)力條件下水泥環(huán)密封性,與凈漿水泥石相比,彈性模量降低了43%,抗折強(qiáng)度增加了84.6%,滲透率小于0.05 m D,能夠滿足35 MPa壓力、35℃溫差下的水泥環(huán)密封性要求,適用于儲(chǔ)氣庫固井。
[Abstract]:According to the special requirements for the toughness of cement stone in gas storage production, the rubber powder with a diameter of 0.15 ~ 0.18 mm was selected as elastic material and polypropylene fiber as toughening material. The optimum dosages of elastic materials and toughened materials were determined to be 3.0% and 0.1, respectively, and PVA latex was used to reduce water loss to improve the brittleness, impact resistance and flexural resistance of cement stone. It can satisfy the long-term sealing property of cement ring under the condition of frequent high pressure injection and production. The elastic modulus, flexural strength, compressive strength and cementing strength, permeability and stress of cement ring under the condition of high pressure injection and mining are comprehensively evaluated, compared with that of pure slurry cement stone, the seal property of cement ring under the condition of permeability and stress is evaluated comprehensively. The elastic modulus is reduced by 43, the flexural strength is increased by 84.6, and the permeability is less than 0.05mD. it can meet the requirements of sealing property of cement ring under 35 MPa pressure and temperature difference of 35 鈩，

本文編號(hào)：1579662