FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995032666> ?p ?o ?g. }

• W1995032666 abstract "Abstract The expansion of horizontal well technology over the last twenty years has led to the parallel increase of the number of hydraulic fracturing treatments in highly deviated wells. The non colinearity of the wellbore axis and of the fracture plane has initially induced significant tortuosity effects and premature proppant screenouts. The length of the perforated interval has therefore been reduced to the acceptable minimum. Although operational problems have been solved this way, the net pressure response while successfully fracturing did not obey any of the existing 2D models (PKN, KGD or Radial). As a consequence, job designs remained impossible and optimum pumping schedules were typically established by trial and error within a given reservoir. The present paper offers the required equations to correctly design transverse fracturing treatments, or collinear fractures with short perforation intervals. As compared to previous models, it only replaces the line source and linear flow assumptions (a consequence of colinearity and long perforated intervals) by the point source and radial flow ones. The new model therefore combines both radial fracture and flow geometries, instead of the conventional Radial model where linear flow (orthogonal to the wellbore axis) is assumed. The theoretical diagnostic (Nolte) plot is in perfect agreement with actual job responses, i.e. a positive, however extremely low slope (almost constant net pressure all along the pad stage). Such a behaviour cannot be interpreted with the responses of the previous models (steep slopes, either positive - PKN - or negative - KGD and Radial). An actual, well documented treatment in the North Sea validates the proposed model for a short point source hydraulic fracturing from a horizontal wellbore. Introduction Hydraulic fracturing of deep enough and highly deviated wells is known to potentially propagate transverse fractures, the wellbore axis not being contained in the fracture plane. In order to prevent the initiation of several parallel fractures and to mitigate the risk of premature proppant screenout (as a result of low rate into, hence narrow width of, each fracture), these wells are cased, cemented and perforated over a very short, high shot density cluster. A unique transverse fracture of radial geometry is propagated from the central cluster, which can be considered as a source point. To design such fracturing jobs and to interpret pressure responses while pumping and after shut-in, it seemed obvious at first sight that the so-called Radial model was the best suited to the case, owing to the fracture geometry. Over the past twenty years, however, it became even more obvious that none of the available fracturing models were matching with the observed pressure responses. While pumping such jobs, the net pressure was high and almost stable throughout the pad stage, instead of being high and increasing (PKN) or low and decreasing (KGD or Radial). The reason why current available models are not adapted to the case of point source hydraulic fracturing is that they all assume linear flow, a legacy of the past of fracturing vertical wells, either open hole or across long perforated intervals. In such cases indeed, the flow source is assumed to be a line, of either fixed (PKN) or increasing (KGD and Radial) length, with orthogonal flow along the fracture. A new model is herein proposed, with both the fracture geometry and flow being radial. Actually not so new, since Sneddon and Elliot had started to derive it as early as 1946.1 At this time however nobody could imagine that the era of horizontal drilling would eventually come, so their difficult mathematical approach of the source point true radial model was abandoned. Its present resurrection therefore stems from the simple recognition that most horizontal well hydraulic fracturing treatments are nowadays performed in wells oriented to propagate transverse fractures or collinear fractures from short perforation clusters. The mathematical developments of the new LMN model (from the names of the authors, as usual in the industry) follow the methodology of Gulrajani and Nolte.2 They are, however, more rigourous in the sense that they are based on equations rather than on proportionalities. In addition, they are not based on the static elliptical profile of the so-called penny-shaped crack in an infinite elastic body.3" @default.
• W1995032666 created "2016-06-24" @default.
• W1995032666 creator A5059367524 @default.
• W1995032666 creator A5061792876 @default.
• W1995032666 creator A5077184780 @default.
• W1995032666 date "2007-01-29" @default.
• W1995032666 modified "2023-10-14" @default.
• W1995032666 title "Modelling of Transverse Hydraulic Fracturing" @default.
• W1995032666 doi "https://doi.org/10.2118/106251-ms" @default.
• W1995032666 hasPublicationYear "2007" @default.
• W1995032666 type Work @default.
• W1995032666 sameAs 1995032666 @default.
• W1995032666 citedByCount "2" @default.
• W1995032666 crossrefType "proceedings-article" @default.
• W1995032666 hasAuthorship W1995032666A5059367524 @default.
• W1995032666 hasAuthorship W1995032666A5061792876 @default.
• W1995032666 hasAuthorship W1995032666A5077184780 @default.
• W1995032666 hasConcept C127313418 @default.
• W1995032666 hasConcept C127413603 @default.
• W1995032666 hasConcept C154954056 @default.
• W1995032666 hasConcept C187320778 @default.
• W1995032666 hasConcept C2779096232 @default.
• W1995032666 hasConcept C66938386 @default.
• W1995032666 hasConcept C78762247 @default.
• W1995032666 hasConceptScore W1995032666C127313418 @default.
• W1995032666 hasConceptScore W1995032666C127413603 @default.
• W1995032666 hasConceptScore W1995032666C154954056 @default.
• W1995032666 hasConceptScore W1995032666C187320778 @default.
• W1995032666 hasConceptScore W1995032666C2779096232 @default.
• W1995032666 hasConceptScore W1995032666C66938386 @default.
• W1995032666 hasConceptScore W1995032666C78762247 @default.
• W1995032666 hasLocation W19950326661 @default.
• W1995032666 hasOpenAccess W1995032666 @default.
• W1995032666 hasPrimaryLocation W19950326661 @default.
• W1995032666 hasRelatedWork W1963700249 @default.
• W1995032666 hasRelatedWork W1994787013 @default.
• W1995032666 hasRelatedWork W2068401803 @default.
• W1995032666 hasRelatedWork W2313436668 @default.
• W1995032666 hasRelatedWork W2361703953 @default.
• W1995032666 hasRelatedWork W2362358095 @default.
• W1995032666 hasRelatedWork W3032919344 @default.
• W1995032666 hasRelatedWork W3192857857 @default.
• W1995032666 hasRelatedWork W4213383041 @default.
• W1995032666 hasRelatedWork W4289831402 @default.
• W1995032666 isParatext "false" @default.
• W1995032666 isRetracted "false" @default.
• W1995032666 magId "1995032666" @default.
• W1995032666 workType "article" @default.