NO894576L - DIFFICULT DRILLING AND USE THEREOF. - Google Patents

DIFFICULT DRILLING AND USE THEREOF.

Info

Publication number
NO894576L
NO894576L NO894576A NO894576A NO894576L NO 894576 L NO894576 L NO 894576L NO 894576 A NO894576 A NO 894576A NO 894576 A NO894576 A NO 894576A NO 894576 L NO894576 L NO 894576L
Authority
NO
Norway
Prior art keywords
difficult drilling
drilling
difficult
Prior art date
Application number
NO894576A
Other languages
Norwegian (no)
Other versions
NO894576D0 (en
Inventor
Shih-Ruey To Chen
Christine A Costello
Gary F Matz
Original Assignee
Calgon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/674,215 external-priority patent/US4652623A/en
Publication of NO894576L publication Critical patent/NO894576L/en
Application filed by Calgon Corp filed Critical Calgon Corp
Priority to NO894576A priority Critical patent/NO894576D0/en
Publication of NO894576D0 publication Critical patent/NO894576D0/en

Links

NO894576A 1984-11-23 1989-11-16 DIFFICULT DRILLING AND USE THEREOF. NO894576D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO894576A NO894576D0 (en) 1984-11-23 1989-11-16 DIFFICULT DRILLING AND USE THEREOF.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/674,215 US4652623A (en) 1984-11-23 1984-11-23 Polymers for use as filtration control aids in drilling muds
NO854676A NO165548C (en) 1984-11-23 1985-11-22 POLYMERS FOR USE AS A FILTRATION CONTROL AID IN DRILL.
NO894576A NO894576D0 (en) 1984-11-23 1989-11-16 DIFFICULT DRILLING AND USE THEREOF.

Publications (2)

Publication Number Publication Date
NO894576L true NO894576L (en) 1986-05-26
NO894576D0 NO894576D0 (en) 1989-11-16

Family

ID=27352953

Family Applications (1)

Application Number Title Priority Date Filing Date
NO894576A NO894576D0 (en) 1984-11-23 1989-11-16 DIFFICULT DRILLING AND USE THEREOF.

Country Status (1)

Country Link
NO (1) NO894576D0 (en)

Also Published As

Publication number Publication date
NO894576D0 (en) 1989-11-16

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