DE1082208B - Process for secondary extraction of petroleum by flooding - Google Patents

Process for secondary extraction of petroleum by flooding

Info

Publication number
DE1082208B
DE1082208B DEC18154A DEC0018154A DE1082208B DE 1082208 B DE1082208 B DE 1082208B DE C18154 A DEC18154 A DE C18154A DE C0018154 A DEC0018154 A DE C0018154A DE 1082208 B DE1082208 B DE 1082208B
Authority
DE
Germany
Prior art keywords
flooding
petroleum
water
solution
oil
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
DEC18154A
Other languages
German (de)
Inventor
Alfred Kiesewetter
Dr Wilhelm Kunze
Curt Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cassella Farbwerke Mainkur AG
Original Assignee
Cassella Farbwerke Mainkur AG
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
Application filed by Cassella Farbwerke Mainkur AG filed Critical Cassella Farbwerke Mainkur AG
Priority to DEC18154A priority Critical patent/DE1082208B/en
Priority to FR814550A priority patent/FR1244682A/en
Publication of DE1082208B publication Critical patent/DE1082208B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/58Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/588Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

Verfahren zur Sekundärförderung von Erdöl durch Fluten Zur Erhöhung der Ölausbeute bei der Sekundärförderung von Erdöl sind bereits Lösungen von hochmolekularen Stoffen als Flutungsmittel vorgeschlagen worden. Die Brauchbarkeit derartiger Produkte wird jedoch häufig eingeschränkt, da sie entweder mit den in den Lagerstätten vorhandenen Salzen oder mit den Salzen des zur Flutung verwendeten Salzwassers Abscheidungen ergeben, die die Lagerstättensonden verstopfen. Weiterhin ist die Beständigkeit der Lösungen gegen eine erhöhte Lagerstättentemperatur beim Fluten in größeren Tiefen erforderlich. Es besteht daher in der Technik das Bedürfnis für Stoffe, welche diese Forderung erfüllen, jedoch die erwähnten Nachteile nicht besitzen.Process for the secondary production of petroleum by floods to increase the oil yield in the secondary production of petroleum are already solutions of high molecular weight Substances have been proposed as flooding agents. The usefulness of such products however, it is often restricted as it is either compatible with those present in the deposits Salts or deposits with the salts of the salt water used for flooding result, which clog the reservoir probes. Furthermore, there is resistance of the solutions against an increased reservoir temperature when flooding at greater depths necessary. There is therefore a need in technology for substances which these Meet the requirement, but do not have the disadvantages mentioned.

Es wurde nun gefunden, daß die Polymerisationsprodukte des Äthylenoxyds, soweit sie ein hohes Molekulargewicht besitzen und noch wasserlöslich sind, den genannten Erfordernissen entsprechen und besonders gut zur Herstellung von Flutungslösungen zur Sekundärförderung von Erdöl geeignet sind. Diese Polymerisate ergeben mit den zur Flutung üblicherweise verwendeten Salzwassern keine Fällungen und bilden mit den Salzen der Öllagerstätten keine Abscheidungen. Die große Ergiebigkeit der erfindungsgemäß verwendbaren Polyäthylenoxyde im Verdickungseffekt erlaubt auch die wirtschaftliche Herstellung von höherviskosen Flutungslösungen, so daß auch schwer fließbare Erdöle mit Vorteil geflutet werden können.It has now been found that the polymerization products of ethylene oxide, as far as they have a high molecular weight and are still water-soluble, the meet the requirements mentioned and are particularly good for the production of flooding solutions are suitable for secondary production of crude oil. These polymers result with the The salt water commonly used for flooding does not precipitate and forms with it the salts of the oil deposits no deposits. The great productivity of the invention usable polyethylene oxides in the thickening effect also allows the economical Production of high viscosity flooding solutions, so that also difficult to flow petroleum can be flooded with advantage.

Beispiel a) Eine Portion ölhaltigen Sandes wurde mit einer Salzlösung geflutet, welche etwa 20 g Calciumchlorid, 198 g Natriumchlorid und 23 g Kaliumchlorid im Liter enthielt. Die Lösung hatte eine Viskosität von 0,85 cP bei 37° C.Example a) A portion of oily sand was washed with a salt solution flooded, which contains about 20 g calcium chloride, 198 g sodium chloride and 23 g potassium chloride contained in the liter. The solution had a viscosity of 0.85 cP at 37 ° C.

b) Eine andere Portion des gleichen ölhaltigen Sandes wurde mit einer Lösung geflutet, die 4 g/Liter eines Polyäthylenoxyds vom K-Wert 235 gelöst in Salzwasser obiger Zusammensetzung enthielt. Diese Lösung hatte eine Viskosität von 10 cP bei 37° C. Mit der Lösung a) erfolgte der Wasserdurchbruch bei der Flutung nach einer Ölausbeute von 23'%, mit der Lösung b) bei 510/a Ölausbeute. Die Ausbeute ist also nach b) doppelt so hoch wie nach a). Zur Gewinnung von 50'0/a des vorhandenen Öles waren bei einer Arbeitsweise nach a) 300 Minuten, nach b) nur 150 Minuten erforderlich, wobei im Falle a) ein Öl-Wasser-Gemisch mit überwiegender Wassermenge aufzuarbeiten war, während im Falle b) ein wasserfreies Öl anfiel.b) Another portion of the same oily sand was mixed with a Solution flooded, the 4 g / liter of a polyethylene oxide with a K value of 235 dissolved in salt water the above composition. This solution had a viscosity of 10 cP 37 ° C. With the solution a), the water breakthrough occurred during the flooding after a Oil yield of 23%, with solution b) at 510 / a oil yield. So the yield is according to b) twice as high as according to a). For the extraction of 50'0 / a of the existing oil were required after a) 300 minutes, after b) only 150 minutes when working, in the case of a) working up an oil-water mixture with a predominant amount of water was, while in case b) an anhydrous oil was obtained.

Das für die Herstellung der Lösung b) verwendete Polyäthylenoxyd ist z. B. nach dem in »Ind. and Engineering Chemistry«, 50 (1958), S. 5 bis 16, referierten Verfahren erhältlich.The polyethylene oxide used for the preparation of solution b) is z. B. after the in »Ind. and Engineering Chemistry ", 50 (1958), pp. 5 to 16, gave a lecture Procedure available.

Claims (1)

PATENTANSPRUCH: Verfahren zur Sekundärförderung von Erdöl durch Fluten, dadurch gekennzeichnet, daß wasserlösliche Polyäthylenoxyde in Form ihrer Lösungen in Wasser oder Salzwasser als Flutungsmittel verwendet werden.PATENT CLAIM: Process for the secondary production of crude oil by flooding, characterized in that water-soluble polyethylene oxides in the form of their solutions used as a flooding agent in water or salt water.
DEC18154A 1958-12-31 1958-12-31 Process for secondary extraction of petroleum by flooding Pending DE1082208B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEC18154A DE1082208B (en) 1958-12-31 1958-12-31 Process for secondary extraction of petroleum by flooding
FR814550A FR1244682A (en) 1958-12-31 1959-12-30 Secondary oil recovery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC18154A DE1082208B (en) 1958-12-31 1958-12-31 Process for secondary extraction of petroleum by flooding

Publications (1)

Publication Number Publication Date
DE1082208B true DE1082208B (en) 1960-05-25

Family

ID=7016387

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC18154A Pending DE1082208B (en) 1958-12-31 1958-12-31 Process for secondary extraction of petroleum by flooding

Country Status (2)

Country Link
DE (1) DE1082208B (en)
FR (1) FR1244682A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014177282A1 (en) 2013-05-03 2014-11-06 Tougas Oilfield Solutions Gmbh Electrolyte-containing aqueous polymer solution and method for tertiary recovery of petroleum

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014177282A1 (en) 2013-05-03 2014-11-06 Tougas Oilfield Solutions Gmbh Electrolyte-containing aqueous polymer solution and method for tertiary recovery of petroleum
DE102013007680A1 (en) 2013-05-03 2014-11-06 Tougas Oilfield Solutions Gmbh Electrolyte-containing aqueous polymer solution and process for the tertiary production of crude oil

Also Published As

Publication number Publication date
FR1244682A (en) 1960-10-28

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