EP0524995A1 - Utilisation d'huile de ricin hydratee comme agent de developpement de la viscosite dans des systemes de lavage a base d'huile pour forages - Google Patents

Utilisation d'huile de ricin hydratee comme agent de developpement de la viscosite dans des systemes de lavage a base d'huile pour forages

Info

Publication number
EP0524995A1
EP0524995A1 EP19910907444 EP91907444A EP0524995A1 EP 0524995 A1 EP0524995 A1 EP 0524995A1 EP 19910907444 EP19910907444 EP 19910907444 EP 91907444 A EP91907444 A EP 91907444A EP 0524995 A1 EP0524995 A1 EP 0524995A1
Authority
EP
European Patent Office
Prior art keywords
oil
viscosity
hydrogenated castor
castor oil
free
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.)
Withdrawn
Application number
EP19910907444
Other languages
German (de)
English (en)
Inventor
Heinz Müller
Claus-Peter Herold
Stephan Von Tapavicza
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0524995A1 publication Critical patent/EP0524995A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based

Definitions

  • the invention relates to a further development in the field of oil-based drilling fluids for the development of geological occurrences and relates in particular to oil-based, conventional weighting agents such as baryta-containing drilling shafts which are free from the oleophilic compounds used today on a large scale and equipped with quaternary N compounds Tone.
  • the invention relates to the last-mentioned class of substances and relates to rinses of the type mentioned, which - at least at the start of their use - can be practically water-free or are designed as invert rinses of the W / O emulsions type.
  • Drilling fluid systems of the type concerned here contain, dissolved and / or dispersed in flowable oil phases of selected rheology, a large number of additives, the presence of which only ensures the usability of the respective system under practical conditions.
  • relevant specialist literature for example the publication Adam T. Bourgoyne Jr. et al. APLIED DRILLING ENGINEERING, SPE TEXTBOOK SERIES, VOL. 2, SOCIETY OF PETROLEUM ENGINERS, Richardson, TX 1986, there in particular the subchapter 2.5 Oil Muds, loc. Cit. Pages 75 to 81.
  • viscosity generator An essential component of such oil-based flushing systems is the viscosity generator. Its selection and control largely determine the rheological properties of the rinse in practical use, which in turn affect a number of parameters. Without any claim to completeness, the following are enumerated: the operating costs for pumping the drilling fluid, the need to keep the applied weighting agents, in particular barite, in suspension, and to carry the drilled rock safely to the surface, here but to ensure timely the rapid separation of drilled rock and possibly gaseous fractions on the one hand and drilling fluid phase to be returned on the other.
  • the progressive drilling requires the constant replenishment and metering of additional portions of the drilling fluid.
  • the required additional portions are freshly prepared on site and fed into the system.
  • the viscosity-building additive has the requirement of the practically spontaneously building higher viscosity in the oil-based liquid phase. Only when such a spontaneous viscosity build-up is guaranteed, even under the ambient conditions, can other mandatory components of the drilling fluid system, in particular the weighting means, be safely incorporated.
  • a delayed increase in viscosity as is the case with a whole series of known ones Viscosity formers can be determined leads to an unacceptable phase separation in the freshly prepared portions of the drilling fluid and thus prevents their trouble-free use in ongoing operation.
  • hydrophobized clays in particular oleophilic bentonite, are of paramount importance.
  • a loading of the swellable layered silicate with quaternary ammonium compounds is provided as the oleophilic finish, which convert the originally hydrophilic mineral feedstock to an oleophilic active substance.
  • Hydrophobicized clays of this type optimally meet the diverse requirements for the viscosity former in oil-based flushing systems, as is currently thought. Due to their rapid and uniform distributability in the closed oil phase, they ensure the required spontaneous formation of the desired degree of viscosity, especially when freshly prepared.
  • the invention is concerned with the exchange of the viscosity formers in oil-based rinsing systems of the type described here and in particular with the use of N-free alternative viscosity formers.
  • the invention aims to solve the subtask of the spontaneous training of sufficient viscosity required by practice when freshly preparing drilling fluids, and especially under practical conditions.
  • the teaching according to the invention is based on the knowledge that the use of hydrogenated castor oil - and in particular a selected specific quality of the hydrogenated castor oil - alone or together with other N-free viscosity formers known per se for adjusting the viscosity in the oil phase of the oil-based flushing system that meets all practical requirements. Not only is it possible to adjust and control the viscosity in continuous operation, but in particular the use of the hydrogenated castor oil as an exchange material for the previously used hydrophobic bentonites also enables the desired viscosity to be formed spontaneously when freshly prepared.
  • the hydrogenated castor oil used according to the invention thus differs from the previously known viscosity formers, for example based on N-free waxes, higher fatty acids and / or their salts.
  • the invention relates in a first embodiment to the use of hydrogenated castor oil instead of organophilic quaternized clays for viscosity control and in particular for spontaneously building up viscosity in oil-based drilling fluids for the development of geological deposits.
  • the invention relates to oil-based drilling fluids for the development of geological deposits, containing viscosity formers dissolved in the oil phase, dispersing weighting agents, fluid loss additives and, if desired, further additives such as emulsifiers, alkalis and dissolved salts, these drilling fluids are characterized in that, if desired, they contain hydrogenated castor oil as oil-soluble viscosity formers together with other known N-free viscosity formers and are free of oil-dispersible, finely dispersed solids containing quaternized N compounds, in particular appropriately treated clays.
  • the invention also relates to the process for the fresh preparation of oil-based drilling fluids under ambient conditions, these drilling fluids containing viscosity formers, weighting agents, fluid loss additives and, if desired, further additives.
  • the process is characterized in that viscosity formers based on hydrogenated castor oil are used in the absence of oil-dispersible and finely divided solids which are equipped with quaternary N-compounds oleophilically.
  • Hydrogenated castor oil is known as a commercial product on the market. It is usually offered as a solid with melting points above 80 ° C, especially above 85 ° C.
  • Particularly suitable are materials which are not only particularly finely divided, for example by fine grinding, but which also have a comparatively high hydroxyl number.
  • Powdery, finely divided hydrogenated castor oil types with a 0H number of at least 150 are particularly suitable according to the invention, with particular importance being given to the types whose OH number exceeds 154. It has been shown that for practical usability in the spontaneous formation of the desired viscosity when freshly prepared, the swelling and dissolving behavior of the types of hydrogenated castor oil defined here leads to optimal technical action.
  • Hydrogenated castor oil dissolves in the oil phases used in practice from drilling fluid systems of the type concerned here. Nevertheless, the desired effect of the viscosity build-up in the sense of the hydrophobized bentonite to be replaced is achieved.
  • the hydrogenated castor oil can be used alone as a viscosity generator, but in a preferred embodiment it is used as a mixture component in a mixture with other viscosity-increasing additives. These further mixture components can in turn also be oil-soluble, but optionally also oil-dispersible. The same applies to them that, like the hydrogenated castor oil, they are free of undesired N compounds and in particular quaternary nitrogen compounds.
  • waxes and wax-like compounds such as montan wax and tall pitch, higher fatty acids and / or their salts, in particular those which are solid at ambient temperature.
  • higher fatty acids and / or their salts in particular those which are solid at ambient temperature.
  • corresponding compounds with polyvalent cations with two and / or trivalent cations of the type of magnesium, calcium and / or aluminum are of particular importance.
  • the proportion of hydrogenated castor oil is usually at least about 20% by weight and in particular is at least about 25 to 45% by weight, based in each case on the Viscosity-forming mixture of active ingredients.
  • the hydrogenated castor oil can also be used together with oil-dispersible solid components which contribute to the viscosity build-up of the oil-based flushing system.
  • oil-dispersible solid components which contribute to the viscosity build-up of the oil-based flushing system.
  • organophilically hydrophobicized very finely divided solids come into consideration, but in the sense of the teaching according to the invention, oleophilic equipment based on quaternary nitrogen compounds is now dispensed with.
  • very finely divided silicas come into consideration which have oleophilic finishes on their surface by means of silyl radicals containing hydrocarbon groups.
  • Such products are known, for example, under the name "Hydrophobic AEROSIL ( R )" and can be obtained by treating the surface of finely divided silicas with halogen silanes, alkoxysilanes, silazanes, siloxanes and the like.
  • oleophilic ultrafine materials which have been given an ecologically harmless finish are the polycationic layered compounds based on the applicant, which are described in the earlier patent application P 39 14916.1 (D 8636 "Means for increasing viscosity in non-aqueous liquid phases, processes for their preparation and their use") 2-dimensional inorganic polycations and 1- and / or polybasic acid anions of pronounced oleophilic character.
  • D 8636 "Means for increasing viscosity in non-aqueous liquid phases, processes for their preparation and their use
  • 2-dimensional inorganic polycations and 1- and / or polybasic acid anions of pronounced oleophilic character are also apply when using such insoluble mixture components the numerical
  • the additives used to increase viscosity based on hydrogenated castor oil are usually used in amounts of about 1 to 10% by weight, based on the weight of the oil phase from the oil-based rinse. Additional amounts in the range from about 2 to 5% by weight can be particularly suitable.
  • oil-based rinsing systems used are both suitable mixtures based on practically water-free oils or oil fractions of suitable rheology and oil-based rinsing systems based on W / O invert emulsions, in particular with contents of the dispersed aqueous phase of up to about 40 to 45% by weight. , into consideration.
  • drilling fluids of this type consist of a multiphase system which has oil, optionally water and finely divided solids.
  • a number of additives are provided for stabilizing the finely dispersed aqueous phase distributed in the closed oil phase and for stabilizing the overall system and for setting the desired performance properties.
  • weighting agents for regulating the density of the drilling fluid, emulsifiers, fluid loss additives, alkali reserves and the like.
  • weighting agents for regulating the density of the drilling fluid, emulsifiers, fluid loss additives, alkali reserves and the like.
  • Invert drilling muds of the type concerned here are either water-free or practically water-free (water content in the oil phase at a maximum of about 5% by weight) or, together with the closed oil phase, they usually contain the finely dispersed aqueous phase in amounts of about 5 to 50% by weight .-% and preferably in amounts of about 5 to 25 wt .-%.
  • plastic viscosity (PV) in the range from approximately 10 to 60 mPas, preferably from approximately 15 to 40 Pas
  • yield point (YP) in the range from approximately 5 to 40 lb / 100 ft 2 , preferably from about 10 to 25 lb / 100 ft 2 - each determined at 50 ° C.
  • Emulsifiers which can be used in practice are systems which are suitable for forming the required W / O emulsions.
  • Selected oleophilic fatty acid salts for example those based on idoamine compounds, are particularly suitable.
  • Emulsifiers of the type concerned here are sold commercially as highly concentrated active ingredient preparations and can be used, for example, in amounts of about 2.5 to 5% by weight, in particular in amounts of about 3 to 4% by weight, based in each case on the Oil phase - find use.
  • hydrophobicized lignite is used in particular as a fluid loss additive and thus in particular to form a dense covering of the drilling walls with a largely liquid-impermeable film.
  • Suitable amounts are, for example, in the range from about 15 to 20 lb / bbl or in the range from about 5 to 7% by weight, based on the oil phase.
  • the amount of the weighting agent - in practice usually barite - to adjust the necessary pressure compensation is adapted to the expected conditions of the bore. It is possible, for example, to add the specific by adding barite Increase the weight of the drilling fluid to values in the range up to approximately 2.5 and preferably to values in the range from approximately 1.3 to 1.6.
  • the disperse aqueous phase is usually loaded with soluble salts in invert drilling fluids of the type concerned here.
  • Calcium chloride and / or potassium chloride are predominantly used here, the saturation of the aqueous phase at room temperature with the soluble salt being preferred.
  • emulsifiers or emulsifier systems also serve, if appropriate, to improve the oil wettability of the inorganic weighting materials.
  • further examples are alkylbenzenesulfonates and imidazoline compounds.
  • Nitrogen-free emulsifier systems and their use in oil-based drilling muds are described in the applicant's earlier patent application P 4003028.8 (D 8158 "Use of selected ether-based emulsifiers for oil-based invert emulsions").
  • a water-free, barite-weighted pure oil rinse based on a commercially available mineral oil (BP 83 HF) is produced and tested in accordance with the following recipe:
  • Example 1 contains 8 g of hydrogenated castor oil in the recipe given, in Example 2 this viscosity former is used in the amount of 5.4 g.
  • Oil-based, barite-weighted drilling fluid systems based on diesel oil are produced according to the following recipe by stirring in at room temperature:
  • the parameters determined in the temperature range from 29 to 32 ° C in the sense of the information given in Examples 1 and 2 before and after the aging at 250 ° F for an hour are the following:
  • An oil-based invert rinse based on an ester oil (predominantly ethylhexyl ester of CIO / Ci2-carboxylic acids) is put together in accordance with the following recipe and tested in the fresh state and after aging for 16 hours at 250 ° C.

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  • 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)
  • Lubricants (AREA)
  • Earth Drilling (AREA)

Abstract

On décrit l'utilisation d'huile de ricin hydratée, à la place d'argiles quaternaires organophiles, pour le contrôle de la viscosité et notamment, pour l'établissement spontané de la viscosité dans les liquides de lavage à base d'huile, pour des forages en vue de l'exploitation de gisements géologiques. L'invention a pour objet des moyens de lavage à base d'huile pour forages de ce type, caractérisés en ce qu'ils renferment, comme agent de développement de viscosité soluble dans l'huile, de l'huile de ricin hydratée, éventuellement avec d'autres agents de développement de viscosité connus, exempts d'azote, et en ce qu'ils sont exempts de matières solides finement dispersées, dispersibles dans l'huile, contenant des composés d'azote quaternaires, notamment d'argiles apprêtées appropriées.
EP19910907444 1990-04-14 1991-04-05 Utilisation d'huile de ricin hydratee comme agent de developpement de la viscosite dans des systemes de lavage a base d'huile pour forages Withdrawn EP0524995A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904012105 DE4012105A1 (de) 1990-04-14 1990-04-14 Verwendung von hydriertem rizinusoel als viskositaetsbildner in oelbasierten bohrspuelsystems
DE4012105 1990-04-14

Publications (1)

Publication Number Publication Date
EP0524995A1 true EP0524995A1 (fr) 1993-02-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910907444 Withdrawn EP0524995A1 (fr) 1990-04-14 1991-04-05 Utilisation d'huile de ricin hydratee comme agent de developpement de la viscosite dans des systemes de lavage a base d'huile pour forages

Country Status (4)

Country Link
EP (1) EP0524995A1 (fr)
CA (1) CA2080484A1 (fr)
DE (1) DE4012105A1 (fr)
WO (1) WO1991016391A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19816308A1 (de) * 1998-04-11 1999-10-14 Henkel Kgaa Rheologisches Additiv
US6187719B1 (en) * 1998-04-28 2001-02-13 Rheox, Inc. Less temperature dependent drilling fluids for use in deep water and directional drilling and processes for providing less temperature dependent rheological properties to such drilling fluids
US6818597B2 (en) * 2000-04-21 2004-11-16 Benchmark Research & Technology, Inc. Suspensions of water soluble polymers in surfactant free non-aqueous solvents

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041275A (en) * 1959-06-22 1962-06-26 Pan American Petroleum Corp High temperature emulsion drilling fluid
US4418755A (en) * 1979-02-14 1983-12-06 Conoco Inc. Methods of inhibiting the flow of water in subterranean formations
GB2129467B (en) * 1982-11-03 1986-07-02 Halliburton Co The use of certain materials as thinners in oil based drilling fluids
US4481121A (en) * 1982-05-17 1984-11-06 Hughes Tool Company Viscosifier for oil base drilling fluids
DE3842703A1 (de) * 1988-12-19 1990-06-21 Henkel Kgaa Verwendung ausgewaehlter esteroele in bohrspuelungen insbesondere zur off-shore-erschliessung von erdoel- bzw. erdgasvorkommen (ii)
DE3842659A1 (de) * 1988-12-19 1990-06-28 Henkel Kgaa Verwendung ausgewaehlter esteroele in bohrspuelungen insbesondere zur off-shore-erschliessung von erdoel- bzw. erdgasvorkommen (i)
DE3903784A1 (de) * 1989-02-09 1990-08-16 Henkel Kgaa Monocarbonsaeure-methylester in invert-bohrspuelschlaemmen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9116391A1 *

Also Published As

Publication number Publication date
WO1991016391A1 (fr) 1991-10-31
CA2080484A1 (fr) 1991-10-15
DE4012105A1 (de) 1991-10-17

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