CN111454701B - 油基钻井液膨胀堵漏剂 - Google Patents

油基钻井液膨胀堵漏剂 Download PDF

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CN111454701B
CN111454701B CN202010119500.2A CN202010119500A CN111454701B CN 111454701 B CN111454701 B CN 111454701B CN 202010119500 A CN202010119500 A CN 202010119500A CN 111454701 B CN111454701 B CN 111454701B
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CN111454701A (zh
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刘智博
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Sichuan Honghua Oil&gas Field Engineering Science And Technology Co ltd
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    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
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    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
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Abstract

本发明公开了一种吸油膨胀率较高，漏失量较小，破乳电压较高，流动性较好的油基钻井液膨胀堵漏剂。该油基钻井液膨胀堵漏剂，包括刚性聚丁酯、氟橡胶、丁苯橡胶；其中，刚性聚丁酯40份‑50份，氟橡胶40份‑50份，丁苯橡胶5份‑15份。采用该油基钻井液膨胀堵漏剂其漏失量能够达到500mL以下，破乳电压基本保持不变，流动度在180mm以上，吸油膨胀率最低达到10％以上。

Description

油基钻井液膨胀堵漏剂
技术领域
本发明涉及石油钻井领域，尤其是一种油基钻井液膨胀堵漏剂。
背景技术
众所周知的：目前石油天然气开采钻井堵漏材料中，大致分为水基钻井液堵漏和油基钻井液堵漏两大类。水基钻井液堵漏材料品种很多，如随钻堵漏剂、复合堵漏剂、桥塞堵漏剂等，颗粒大小和材质均不一样。常用的材料有纤维制品(如纸、棉籽壳、)，颗粒物(如坚果壳)、纤维素、植物胶、聚戊糖等。而油基钻井液堵漏材料则很少。水基堵漏材料无法应用于油基钻井液堵漏(纤维状材质堵漏剂会降低油基钻井液破乳电压、影响流变性)，现在油基钻井液现场使用的最多为云母片。
现有的油基钻井液堵漏剂存在以下问题：
①云母片材料本身刚性不够，易重复发生漏失现象，承压能力不行，堵漏效果差；
②纤维类堵漏剂影响油基泥浆性能，吸附乳化剂，降低破乳电压、影响流动性；
③井底漏层缝隙大小不确定，现有堵漏材料尺寸大小固定，不具备油膨胀性。
故使用单一堵漏剂不能有效一次性解决漏失问题。
发明内容
本发明所要解决的技术问题是提供一种吸油膨胀率较高，漏失量较小，破乳电压较高，流动性较好的油基钻井液膨胀堵漏剂。
本发明解决其技术问题所采用的技术方案是：油基钻井液膨胀堵漏剂，包括刚性聚丁酯、氟橡胶、丁苯橡胶；其中，刚性聚丁酯40份-50份，氟橡胶40份-50份，丁苯橡胶5份-15份。
具体的，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目，丁苯橡胶10-100目。
优选的，刚性聚丁酯片状或颗粒45份；氟橡胶45份；丁苯橡胶10份。
本发明的有益效果是：本发明所述的一种油基钻井液膨胀堵漏剂，其漏失量能够达到500mL以下，破乳电压基本保持不变，流动度在180mm以上，吸油膨胀率最低达到10％以上；因此，吸油膨胀率较高，漏失量较小，破乳电压较高，流动性较好。
具体实施方式
下面结合实施例对本发明进一步说明。
本发明所述的油基钻井液膨胀堵漏剂，包括刚性聚丁酯、氟橡胶、丁苯橡胶；其中，刚性聚丁酯40份-50份，氟橡胶40份-50份，丁苯橡胶5份-15份。具体的，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目，丁苯橡胶10-100目。
优选的，刚性聚丁酯片状或颗粒45份；氟橡胶45份；丁苯橡胶10份。
实施例一
取刚性聚丁酯片状或颗粒45份，氟橡胶45份，丁苯橡胶10份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目，丁苯橡胶10-100目。
实施例二：
取氟橡胶45份，丁苯橡胶10份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述氟橡胶10-100目，丁苯橡胶10-100目。
实施例三：
取刚性聚丁酯片状或颗粒40份，氟橡胶45份，丁苯橡胶10份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目，丁苯橡胶10-100目。
实施例四：
取刚性聚丁酯片状或颗粒45份，丁苯橡胶10份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述刚性聚丁酯为片状或颗粒4-200目，丁苯橡胶10-100目。
实施例五：
取刚性聚丁酯片状或颗粒45份，氟橡胶20份，丁苯橡胶10份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目，丁苯橡胶10-100目。
实施例六：
取刚性聚丁酯片状或颗粒45份，氟橡胶45份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目。
实施例七：
取刚性聚丁酯片状或颗粒45份，氟橡胶45份，丁苯橡胶2份，均匀混合。即可制取“油基钻井液膨胀堵漏剂”。其中，所述刚性聚丁酯为片状或颗粒4-200目，氟橡胶10-100目，丁苯橡胶10-100目。
并且通过以下方式对实施例制备的油基钻井液膨胀堵漏剂的性能进行检测：
1、配置油基钻井液基浆，测试基浆基本性能；
2、基浆中加入10％油基钻井液堵漏剂，搅拌均匀后测试样浆基本性能；进行对比。
其中，基浆为3000ml5#白油+5％乳化剂+3％有机土+4％降滤失剂+3％氧化钙+600ml氯化钙溶液+4200g重晶石。样浆：基浆+10％油基钻井液堵漏剂，搅拌1h。
得到如下数据：
Figure GDA0002541350940000031
实验结果表明油基钻井液膨胀堵漏剂，能明显的降低油基泥浆漏失量，同时不影响油基钻井液破乳电压和流变性。

Claims (3)

1.油基钻井液膨胀堵漏剂，其特征在于：由刚性聚丁酯、氟橡胶、丁苯橡胶组成；其中，刚性聚丁酯40份-50份，氟橡胶40份-50份，丁苯橡胶5份-15份。
2.根据权利要求1所述的油基钻井液膨胀堵漏剂，其特征在于：所述刚性聚丁酯为片状或颗粒，粒径为4-200目，氟橡胶粒径为10-100目，丁苯橡胶粒径为10-100目。
3.根据权利要求1所述的油基钻井液膨胀堵漏剂，其特征在于：刚性聚丁酯片状或颗粒45份；氟橡胶45份；丁苯橡胶10份。
CN202010119500.2A 2020-02-26 2020-02-26 油基钻井液膨胀堵漏剂 Active CN111454701B (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1442438A (zh) * 2002-03-01 2003-09-17 中国石油天然气股份有限公司 高吸油性树脂及其合成方法
CN103848935A (zh) * 2014-02-24 2014-06-11 中国石油天然气股份有限公司 一种吸油树脂以及包含该吸油树脂的吸油膨胀橡胶
CN108219332A (zh) * 2017-12-29 2018-06-29 中海石油(中国)有限公司湛江分公司 一种吸油膨胀材料及其制备方法和应用
CN108314996A (zh) * 2018-01-30 2018-07-24 四川泓华油气田工程科技有限公司 钻井液用堵漏剂

Patent Citations (4)

* Cited by examiner, † Cited by third party
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CN1442438A (zh) * 2002-03-01 2003-09-17 中国石油天然气股份有限公司 高吸油性树脂及其合成方法
CN103848935A (zh) * 2014-02-24 2014-06-11 中国石油天然气股份有限公司 一种吸油树脂以及包含该吸油树脂的吸油膨胀橡胶
CN108219332A (zh) * 2017-12-29 2018-06-29 中海石油(中国)有限公司湛江分公司 一种吸油膨胀材料及其制备方法和应用
CN108314996A (zh) * 2018-01-30 2018-07-24 四川泓华油气田工程科技有限公司 钻井液用堵漏剂

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