低摩阻耐压防漏低密度水泥浆固井技术

TE256.6; 长庆苏里格气田刘家沟组地层承压能力低,现有低密度水泥浆体系耐压性能差,受压后密度上升、流变性能差,施工压力高,易发生漏失,造成水泥浆返高不够、封固段固井质量差.为此设计研发了一种低摩阻耐压防漏低密度水泥浆体系,运用紧密堆积理论进行水泥浆四级颗粒级配,优选耐压性能优良的减轻材料,选用合适的外加剂形成低摩阻耐压防漏低密度水泥浆配方.水泥浆密度为1.25～1.35 g/cm3,范宁摩阻系数降低约50％;耐压性能良好,防漏效果明显,综合性能优良.开展混拌工艺研究,采用纯机械混拌工艺,混拌大样与小样性能吻合率达到99％,保证了混灰质量和效率.在苏里格气田试验应用4口井,固井施工正常,未...

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Published in钻井液与完井液 Vol. 39; no. 5; pp. 608 - 614
Main Authors 王鼎, 万向臣, 杨晨
Format Journal Article
LanguageChinese
Published 川庆钻探工程有限公司钻采工程技术研究院,西安710018 01.09.2022
低渗透油气田勘探开发国家工程实验室,西安710018%川庆钻探工程有限公司长庆固井公司,西安710018
Subjects
颗粒级配
混拌工艺
固井
耐压性能
低摩阻
防漏
Online AccessGet full text
ISSN1001-5620
DOI10.12358/j.issn.1001-5620.2022.05.012

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Abstract TE256.6; 长庆苏里格气田刘家沟组地层承压能力低,现有低密度水泥浆体系耐压性能差,受压后密度上升、流变性能差,施工压力高,易发生漏失,造成水泥浆返高不够、封固段固井质量差.为此设计研发了一种低摩阻耐压防漏低密度水泥浆体系,运用紧密堆积理论进行水泥浆四级颗粒级配,优选耐压性能优良的减轻材料,选用合适的外加剂形成低摩阻耐压防漏低密度水泥浆配方.水泥浆密度为1.25～1.35 g/cm3,范宁摩阻系数降低约50％;耐压性能良好,防漏效果明显,综合性能优良.开展混拌工艺研究,采用纯机械混拌工艺,混拌大样与小样性能吻合率达到99％,保证了混灰质量和效率.在苏里格气田试验应用4口井,固井施工正常,未发生漏失,固井质量合格;施工压力明显降低,固井质量显著提升,为低压易漏地层固井提供有力的技术支撑.
AbstractList TE256.6; 长庆苏里格气田刘家沟组地层承压能力低,现有低密度水泥浆体系耐压性能差,受压后密度上升、流变性能差,施工压力高,易发生漏失,造成水泥浆返高不够、封固段固井质量差.为此设计研发了一种低摩阻耐压防漏低密度水泥浆体系,运用紧密堆积理论进行水泥浆四级颗粒级配,优选耐压性能优良的减轻材料,选用合适的外加剂形成低摩阻耐压防漏低密度水泥浆配方.水泥浆密度为1.25～1.35 g/cm3,范宁摩阻系数降低约50％;耐压性能良好,防漏效果明显,综合性能优良.开展混拌工艺研究,采用纯机械混拌工艺,混拌大样与小样性能吻合率达到99％,保证了混灰质量和效率.在苏里格气田试验应用4口井,固井施工正常,未发生漏失,固井质量合格;施工压力明显降低,固井质量显著提升,为低压易漏地层固井提供有力的技术支撑.
Author 杨晨
王鼎
万向臣
AuthorAffiliation 川庆钻探工程有限公司钻采工程技术研究院,西安710018;低渗透油气田勘探开发国家工程实验室,西安710018%川庆钻探工程有限公司长庆固井公司,西安710018
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Author_FL WAN Xiangchen
WANG Ding
YANG Chen
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Keywords 颗粒级配
混拌工艺
固井
耐压性能
低摩阻
防漏
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Publisher 川庆钻探工程有限公司钻采工程技术研究院,西安710018
低渗透油气田勘探开发国家工程实验室,西安710018%川庆钻探工程有限公司长庆固井公司,西安710018
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Snippet TE256.6; 长庆苏里格气田刘家沟组地层承压能力低,现有低密度水泥浆体系耐压性能差,受压后密度上升、流变性能差,施工压力高,易发生漏失,造成水泥浆返高不够、封固段固井质量...
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Title 低摩阻耐压防漏低密度水泥浆固井技术
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