中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
10期
61-64
,共4页
深层卤水%钾盐%卤水钻井液%配制%混合搅拌器%柴达木盆地
深層滷水%鉀鹽%滷水鑽井液%配製%混閤攪拌器%柴達木盆地
심층서수%갑염%서수찬정액%배제%혼합교반기%시체목분지
deep layer brine%potash salt%brine drilling fluid%preparation%mixing agitator%Qaidam Basin
柴达木盆地察汗斯拉图矿区蕴藏着极为丰富的钾盐类矿产资源。钾盐察ZK02孔设计1500 m，钻遇地层为新近系盐湖相沉积地层。在钻进过程中易产生缩径、造浆、掉块、坍塌等现象，钻遇盐岩层或含钙、镁离子盐水入侵时，钻井液性能易发生变化，给钻探施工带了困难。根据盐矿钻孔地质条件和技术要求，设计3级口径的钻孔结构。在施工中，针对巨厚层砂砾碎屑岩的特点，选择加重卤水钻井液护壁，起到了安全护壁效果，并采用研制的卤水钻井液混合搅拌器，提高了配浆速度，保证了钻井液性能和质量。卤水钻井液和卤水钻井液混合搅拌器的使用，为柴达木盆地深层卤水钾盐矿区的钻探施工探索出了快速配制钻井液提供了借鉴。
柴達木盆地察汗斯拉圖礦區蘊藏著極為豐富的鉀鹽類礦產資源。鉀鹽察ZK02孔設計1500 m，鑽遇地層為新近繫鹽湖相沉積地層。在鑽進過程中易產生縮徑、造漿、掉塊、坍塌等現象，鑽遇鹽巖層或含鈣、鎂離子鹽水入侵時，鑽井液性能易髮生變化，給鑽探施工帶瞭睏難。根據鹽礦鑽孔地質條件和技術要求，設計3級口徑的鑽孔結構。在施工中，針對巨厚層砂礫碎屑巖的特點，選擇加重滷水鑽井液護壁，起到瞭安全護壁效果，併採用研製的滷水鑽井液混閤攪拌器，提高瞭配漿速度，保證瞭鑽井液性能和質量。滷水鑽井液和滷水鑽井液混閤攪拌器的使用，為柴達木盆地深層滷水鉀鹽礦區的鑽探施工探索齣瞭快速配製鑽井液提供瞭藉鑒。
시체목분지찰한사랍도광구온장착겁위봉부적갑염류광산자원。갑염찰ZK02공설계1500 m，찬우지층위신근계염호상침적지층。재찬진과정중역산생축경、조장、도괴、담탑등현상，찬우염암층혹함개、미리자염수입침시，찬정액성능역발생변화，급찬탐시공대료곤난。근거염광찬공지질조건화기술요구，설계3급구경적찬공결구。재시공중，침대거후층사력쇄설암적특점，선택가중서수찬정액호벽，기도료안전호벽효과，병채용연제적서수찬정액혼합교반기，제고료배장속도，보증료찬정액성능화질량。서수찬정액화서수찬정액혼합교반기적사용，위시체목분지심층서수갑염광구적찬탐시공탐색출료쾌속배제찬정액제공료차감。
The Qaganslat mineral district in Qaidam Basin holds abundant potash salts. The designed depth of borehole JYC ZK02 is 1500m; intersected strata are Neogene salt lacustrine facies deposits. During the drilling will confront with phenomena of borehole shrinkage, muddied, rock dropping and collapsing etc. When intersected with rock salts or intruded by salt water containing calcium, magnesium ions will induce drilling fluid property changes and bring on difficulties in drilling. According to salt deposit drilling geolog-ical condition and technical requirement, designed 3 diameter graded borehole configuration. In allusion to the characteristics of super thick sandy and gravelly clastic rocks, the weighted brine drilling fluid has been used to protect borehole wall safety;by the use of spe-cially developed mixing agitator to mix the brine drilling fluid, thus speeded up drilling fluid preparation and ensured drilling fluid per-formance and quality. Both the weighted brine drilling fluid and fluid mixing agitator have provided reference for drilling fluid fast prep-aration in deep potash salt deposit area borehole drilling in Qaidam Basin.
