Safe drilling method for deepwater narrow pressure window well
The invention discloses a safe drilling method for a deepwater narrow pressure window well. The safe drilling method comprises the following steps of S1, preparation before drilling; S2, combination of drilling tools, wherein a measurement-while-drilling tool is installed at the position close to a...
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| creator | MA CHUANHUA GUO YONGBIN GU CHUNWEI FANG MANZONG LIU HEXING XU YILONG ZHENG JINLONG ZHAO XUEZHAN TIAN YE LI ZHONG LI LEI |
| description | The invention discloses a safe drilling method for a deepwater narrow pressure window well. The safe drilling method comprises the following steps of S1, preparation before drilling; S2, combination of drilling tools, wherein a measurement-while-drilling tool is installed at the position close to a drilling bit; S3, going-down, wherein the sensibility of the drilling speed pressure kick is analyzed, and an upper formation is subjected to pressure-bearing capacity testing, and when requirements are not met, the upper formation is subjected to leaking stoppage in advance first; S4, actual drilling, wherein good drilling fluid performance is maintained, solid control is strengthened, the annulus circulating pressure loss is reduced, the principle that after rotation, pumping is slowly startedat small displacement is adopted, and over-fast pumping is strictly forbidden; S5, redressing, wherein every time drilling is conducted one string, redressing is conducted two times; S6, pulling-out,wherein in the pulling-ou |
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The safe drilling method comprises the following steps of S1, preparation before drilling; S2, combination of drilling tools, wherein a measurement-while-drilling tool is installed at the position close to a drilling bit; S3, going-down, wherein the sensibility of the drilling speed pressure kick is analyzed, and an upper formation is subjected to pressure-bearing capacity testing, and when requirements are not met, the upper formation is subjected to leaking stoppage in advance first; S4, actual drilling, wherein good drilling fluid performance is maintained, solid control is strengthened, the annulus circulating pressure loss is reduced, the principle that after rotation, pumping is slowly startedat small displacement is adopted, and over-fast pumping is strictly forbidden; S5, redressing, wherein every time drilling is conducted one string, redressing is conducted two times; S6, pulling-out,wherein in the pulling-ou</description><language>chi ; eng</language><subject>EARTH DRILLING ; EARTH DRILLING, e.g. DEEP DRILLING ; FIXED CONSTRUCTIONS ; MINING ; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181225&DB=EPODOC&CC=CN&NR=109083596A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181225&DB=EPODOC&CC=CN&NR=109083596A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MA CHUANHUA</creatorcontrib><creatorcontrib>GUO YONGBIN</creatorcontrib><creatorcontrib>GU CHUNWEI</creatorcontrib><creatorcontrib>FANG MANZONG</creatorcontrib><creatorcontrib>LIU HEXING</creatorcontrib><creatorcontrib>XU YILONG</creatorcontrib><creatorcontrib>ZHENG JINLONG</creatorcontrib><creatorcontrib>ZHAO XUEZHAN</creatorcontrib><creatorcontrib>TIAN YE</creatorcontrib><creatorcontrib>LI ZHONG</creatorcontrib><creatorcontrib>LI LEI</creatorcontrib><title>Safe drilling method for deepwater narrow pressure window well</title><description>The invention discloses a safe drilling method for a deepwater narrow pressure window well. 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The safe drilling method comprises the following steps of S1, preparation before drilling; S2, combination of drilling tools, wherein a measurement-while-drilling tool is installed at the position close to a drilling bit; S3, going-down, wherein the sensibility of the drilling speed pressure kick is analyzed, and an upper formation is subjected to pressure-bearing capacity testing, and when requirements are not met, the upper formation is subjected to leaking stoppage in advance first; S4, actual drilling, wherein good drilling fluid performance is maintained, solid control is strengthened, the annulus circulating pressure loss is reduced, the principle that after rotation, pumping is slowly startedat small displacement is adopted, and over-fast pumping is strictly forbidden; S5, redressing, wherein every time drilling is conducted one string, redressing is conducted two times; S6, pulling-out,wherein in the pulling-ou</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS |
| title | Safe drilling method for deepwater narrow pressure window well |
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