CN111472715A - 硬地层裸眼侧钻填井材料及应用方法 - Google Patents

硬地层裸眼侧钻填井材料及应用方法 Download PDF

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Publication number
CN111472715A
CN111472715A CN201910060646.1A CN201910060646A CN111472715A CN 111472715 A CN111472715 A CN 111472715A CN 201910060646 A CN201910060646 A CN 201910060646A CN 111472715 A CN111472715 A CN 111472715A
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Prior art keywords
open hole
hard formation
hard
sidetracking
filling material
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Inventor
董志辉
曹向峰
胥豪
马永乾
毕研涛
刘晓兰
张晓明
祝靖
曲其勇
吴明波
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Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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Priority to CN201910060646.1A priority Critical patent/CN111472715A/zh
Publication of CN111472715A publication Critical patent/CN111472715A/zh
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Earth Drilling (AREA)

Abstract

本发明提供一种硬地层裸眼侧钻填井材料。本发明技术方案:硬地层裸眼侧钻填井材料是由重量比为1%‑5%的膨胀材料、重量比为1%‑5%铝纤维、重量比为25%‑55%的硬质材料与重量比为35%‑65%的G级水泥组成。其应用方法是将此材料混合均匀并与水勾兑后即可用于硬地层裸眼侧钻填井作业。所述膨胀材料是膨润土和生石灰,硬质材料是细硅粉砂,细硅粉砂的主要成份为二氧化硅。本发明用于硬地层裸眼侧钻填井作业,通过提高填井水泥塞强度、降低水泥塞的可钻性,进而提高硬地层裸眼侧钻成功率。

Description

硬地层裸眼侧钻填井材料及应用方法
技术领域
本发明涉及的是钻井作业使用化工材料技术领域,具体是一种硬地层裸眼侧钻填井材料及应用方法。
背景技术
目前裸眼侧钻井常用如下两种方法侧钻:一种是使用水泥填井形成水泥塞后采用弯螺杆侧钻;另一种是使用水泥填井形成水泥塞后采用直螺杆+弯接头侧钻。这两种侧钻方法都需要使用水泥填井形成水泥塞,利用水泥塞给侧钻工具提供支撑力,使钻头形成指向井壁的侧向力来侧钻。采用这两种方法在常规地层裸眼侧钻成功率高,但在硬地层裸眼侧钻时,往往由于水泥塞强度低、可钻性好,导致侧钻钻头钻水泥而不钻地层,造成侧钻失败,需要重新填井再侧钻,有时甚至需要多次填井,侧钻才能成功,侧钻施工周期长,成本高。尤其是采用弯螺杆侧钻的侧钻方法,具有起下钻次数少、施工周期短、侧钻轨迹全角变化率低、井眼圆滑等优点,是侧钻施工比较理想的方法,但在硬地层裸眼侧钻时,由于水泥塞强度低、可钻性好,弯螺杆的侧向力小,侧钻钻头更容易钻水泥而不钻地层,侧钻更容易失败。
发明内容
本发明目的是针对现有技术存在的问题,提供一种硬地层裸眼侧钻填井材料及应用方法,用于硬地层裸眼侧钻填井作业,通过提高水泥塞强度、降低水泥塞的可钻性,进而提高硬地层裸眼侧钻成功率。
本发明技术方案:一种硬地层裸眼侧钻填井材料,是由重量比为1%-5%的膨胀材料、重量比为1%-5%铝纤维、重量比为25%-55%的硬质材料与重量比为35%-65%的G级水泥组成。
所述膨胀材料是膨润土和生石灰;所述铝纤维的直径为0.1-0.2mm,长度为2-8cm;所述硬质材料是细硅粉砂,细硅粉砂的主要成份为二氧化硅,粒径为0.1-2mm。
应用方法是将此材料混合均匀并与水混合后即可用于硬地层裸眼侧钻填井作业。
上述技术方案中,加入膨胀材料目的是提高填井水泥塞的强度;加入硬质材料目的是提高填井水泥塞的硬度以及耐磨性,降低水泥塞的可钻性;加入铝纤维目的是进一步提高填井水泥塞的强度、硬度及耐磨性,进一步降低水泥塞的可钻性,同时铝纤维具有一定的可钻性,不会损坏钻头。
本发明的优点是:能有效提高填井水泥塞强度、硬度、降低水泥塞的可钻性,进而提高硬地层裸眼侧钻成功率,尤其是提高采用弯螺杆侧钻的成功率,可将弯螺杆侧钻方法作为优选的侧钻方法,侧钻施工周期短、侧钻井眼圆滑。
具体实施方式
实施例1,该硬地层裸眼侧钻填井材料,由重量比为3%的膨胀材料、重量比为2%铝纤维、重量比为35%的硬质材料与重量比为60%的G级水泥组成,将此材料混合均匀,采用固井设备,与水混合后即可进行硬地层裸眼侧钻填井作业。
实施例2,该硬地层裸眼侧钻填井材料,由重量比为4%的膨胀材料、重量比为5%铝纤维、重量比为45%的硬质材料与重量比为56%的G级水泥组成,将此材料混合均匀,采用固井设备,与水混合后即可进行硬地层裸眼侧钻填井作业。
实施例3,该硬地层裸眼侧钻填井材料,由重量比为5%的膨胀材料、重量比为5%铝纤维、重量比为35%的硬质材料与重量比为55%的G级水泥组成,将此材料混合均匀,采用固井设备,与水混合后即可进行硬地层裸眼侧钻填井作业。
实施例4,该硬地层裸眼侧钻填井材料,由重量比为1%的膨胀材料、重量比为1%铝纤维、重量比为45%的硬质材料与重量比为53%的G级水泥组成,将此材料混合均匀,采用固井设备,与水混合后即可进行硬地层裸眼侧钻填井作业。
上述实施例中的膨胀材料是膨润土和生石灰,硬质材料是细硅粉砂,细硅粉砂的主要成份为二氧化硅,也可以采用其它同性能材料替代。
在硬地层裸眼侧钻填井作业时,可将该水泥添加材料重点用于侧钻点附近井段,也可用于整个填井水泥塞井段。

Claims (6)

1.一种硬地层裸眼侧钻填井材料,其特征是,包含以下重量份的组分:膨胀材料1-5份、铝纤维1-5份、硬质材料25-55份和G级水泥35-65份。
2.根据权利要求1所述的硬地层裸眼侧钻填井材料,其特征是,所述膨胀材料是膨润土和生石灰。
3.根据权利要求1或2所述的硬地层裸眼侧钻填井材料,其特征是,所述铝纤维的直径为0.1-0.2mm,长度为2-8cm。
4.根据权利要求3所述的硬地层裸眼侧钻填井材料,其特征是,所述硬质材料是细硅粉砂,粒径为0.1-2mm。
5.根据权利要求4所述的硬地层裸眼侧钻填井材料,其特征是,所述细硅粉砂的主要成份为二氧化硅。
6.一种按照权利要求5所述硬地层裸眼侧钻填井材料的应用方法,其特征在于,包括以下步骤:
将硬地层裸眼侧钻填井材料混合均匀;
与水混合后即可用于硬地层裸眼侧钻填井作业。
CN201910060646.1A 2019-01-23 2019-01-23 硬地层裸眼侧钻填井材料及应用方法 Pending CN111472715A (zh)

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CN102391845A (zh) * 2011-09-13 2012-03-28 任丘市华北石油通运石油机械有限公司 一种复合化学封堵剂
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US6012516A (en) * 1997-09-05 2000-01-11 Schlumberger Technology Corporation Deviated borehole drilling assembly
CN101215463A (zh) * 2008-01-17 2008-07-09 中国矿业大学 一种钻孔密封材料
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CN102391845A (zh) * 2011-09-13 2012-03-28 任丘市华北石油通运石油机械有限公司 一种复合化学封堵剂
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Application publication date: 20200731