Reduce overall pumping time with quick, continuous hydraulic fracturing using fracpoint ballactivated frac sleeves. In this experiment, 3,800 litres of gelled petroleum and sand were injected into a gas producing limestone formation at a depth of 730 metres, followed by an injection of a gel breaker. Hydraulic fracturing best management practices environmentally friendly drilling program john michael fernandez matthew gunter objectives of presentation introduce and describe hydraulic fracturing present environmental concerns discuss best management practices us shale plays major shale plays with hydraulic fracturing bakken north dakota, montana, canada oil barnett texas dfw area. In this particular case study, a lateral well in a basincentered gas bcg area was completed with swell. Multistage hydraulic fracturing in horizontal wells is a wellknown technology and is a key mechanism for gas recovery from extremely low permeable shale gas reservoirs. A simulation study comparing the texas twostep and the.
The success of these plays in north america has operators around the globe trying to identify similar reservoirs. Hydraulic multistage fracturing sleeve the fracright solo sleeve with integral ball seat ensures a pressure tight seal to withstand the most challenging of fracturing operations. During hydraulic fracturing of shalegas reservoirs. However, not every well is completed using this method.
Hydraulic fracture water usage in northeast british. Hydraulic fracture water usage in northeast british columbia. They will also get an overview of lowpermeability plays and learn the basics of hydraulic fracturing and refracturing. Pdf combining solvent injection, electromagnetic heating.
Implementation of massive multistage hydraulic fracturing mmhf in long horizontal wells has changed the natural gas industry worldwide. Multistage hydraulic fracturing along with horizontal drilling has. The main objective of multistage fracturing is to contact the reservoir by separating the long wellbore into many segments and creating many transverse fractures in each well segment. After hydraulic fracturing, an extended fracture network is created to enlarge the contacting area between the wellbore and rock matrix, which could significantly promote the production rate. Each sleeve is opened by pumping a selective cartridge down to the matching profiles in the sleeves. To properly simulate the propagation of multiple fractures for a completion stage in a horizontal well, fracture models need to take into account the interaction between adjacent hydraulic fractures. In the last decade new production from shales and other lowpermeability reservoirs that require multistage hydraulic fracturing has significantly influenced the price and supply of hydrocarbons. A new approach to determining multistage hydraulic. The multistage hydraulic fracturing of horizontal wells is commonly used stimulation technique to enhance the permeability of unconventional reservoirs in the oil and gas industry. Multistage hydraulic fracturing and stimulation systems for maximum production from tight sands, shale, and other unconventional oil and gas reservoirs. Features the fracright system is a drop ball activated fracturing system that enables the installation of multiple sleeves. Is offshore hydraulic fracturing the same procedure as operations conducted onshore. In 2015, burton started unconventional oil and gas training, a company specializing in training and consulting for unconventional multistage completions. Fracture growth direction, number of stages theoretical justification and case.
Pdf 3d dem simulation on the interference of multiple. Interpreting uncemented multistage hydraulic fracturing completion effectiveness using fiberoptic dts injection data. The new procedure to determine size of multistage hydrofractures in horizontal holes is tested using field data on china deposits. The basic operation of hydraulic fracturing is similar but the scale is significantly different than onshore operations due in large part to the geologic formations and the cost and logistical constraints that occur. A geomechanical model was developed for the field characterizing insitu stresses, direction of the minimum horizontal stress and rock elastic. Hydraulic fracturing design an overview sciencedirect. Multistage hydraulic fracturing optimization for a shale. After the system has been installed, stages are isolated using openhole packers or cement. Multistage hydraulic fracturing of egs with application to. The simplified twozone model to describe fluid flow in steadystate horizontal holes with multistage hydraulic fracturing is proposed, and the analytical solution in order to calculate sizes of hydrofractures is presented. Spe 159786 hydraulic fracturing design and optimization. In 2015, burton started unconventional oil and gas training, a company specializing in training and consulting for. Connectivity with fracture depth of penetration in shales open or closed perforation tunnels impact of perforating on fracturing and productivity cluster spacing wells are horizontal and fractured in 3. With industryleading experience and indepth technical support for all completion methodologies, we can help improve operational efficiency and increase recovery in unconventional wells.
However, a detailed study of applicability and design requirements for multistage fracturing of the egs wells is required. Once hydraulic fracturing of the zone is completed, the tool can be quickly repositioned to the next bps casing collar to repeat the process. To model the combined multistage technologies of radiofrequency electromagnetic heating rfem, solvent injection, and hydraulic fracturing, a mathematical model was developed. Speed up hydraulic fracturing and open the well rapidly after your frac with a multistage plugandperf completion featuring reliable frac plug isolation. Modeling of fault reactivation and induced seismicity during hydraulic fracturing of shalegas reservoirs. However, due to the scale of frac, study of gas production from shale reservoirs with multistage hydraulic fracturing horizontal well.
Models allow an optimized design of fracturing operation where the height, length, and orientation of the fractures can be. Stress shadowing key to optimizing spacing in multistage. Hydraulic fracture optimization in unconventional reservoirs. Hydraulic fracturing is indeed relevant to indiana and has been since it began to be used in the early 1950s. Historically, on average, only about 24% of new oil wells are completed with the use of hydraulic fracturing. Thus, the reservoir is a good candidate for multistage hydraulic fracturing of a long horizontal well oriented along the minimum horizontal stress to achieve a commercially viable recovery level. Research article pore pressure disturbance induced by multistage hydraulic fracturing in shale gas. Multistage hydraulic fracturing has become a common practice to extract oil and gas from unconventional reservoirs with extremely low permeability.
Hydraulic fracturing is a stimulation technique used to extract trapped hydrocarbon. Fracture fluid decisions and the type of completion technology employed makes a large difference in well performance and cost and economics in the montney. The cartridges are fully dissolvable post fracturing, requiring no further intervention. The role of preexisting fractures and faults during multistage hydraulic fracturing in the bakken formation yi yang 1and mark d. Accelerate completion times and optimize production with fieldproven multistage fracturing solutions. Hydraulic fracturing also called fracking, fracing, hydrofracking, fraccing, fracing, and hydrofracturing is a well stimulation technique in which rock is fractured by a pressurized liquid. Frac sleeves reduce opex, risks, and environmental impact in multistage fracturing by planning and running your completion in advance, and then stimulating with continuous pumping operations. If successful, steam can pass through the barriers, effectively heat the otherwise isolated oil and recover it. Vast gas resources in low permeability strata shale are being unlocked in north america by installing largedrainagevolume wells in plays. Much talk has been made about driving down hydraulic fracturing costs through the use of. Study of gas production from shale reservoirs with multi. The suggested method is to perform a multistage fracturing treatment on the injector to open up barriers with vertical hydraulic fractures before steaming. Multistage hydraulic fracturing shale and tight sand. Natural gas colourless, highly flammable gaseous hydrocarbon consisting primarily of methane and ethane.
The straddle tool can be pulled out of the well once completed, allowing immediate production without. Several hydraulic fracturing techniques including zipper fracturing and alternating fracturing have been developed to mitigate the impacts of in situ stress alteration compromising the desired fracture network due to the propagation of fractures in unfavorable orientations. Microseismic data measured during multistage hydraulic fracturing of hess wells indicate stress shadowing exhibits a 3d behavior. The multistage packer is a fitforservice solution to increase reliability compared with standard mechanical packers.
Hydraulic fracturing is such a technology which is being used in the oil and gas industry for many decades to create highly conductive channels in the formations having very low permeability values. Comprehensive mechanismbased investigation of stimulations in naturally fractured reservoirs promotes the development of new hydraulic fracture models in a finite element method platform, abaqus. The process involves the highpressure injection of fracking fluid primarily water, containing sand. Modelling and field application yijin zeng,1,2 zizhen wang,3,4 yanbin zang,1,2 ruihe wang,3,4 feifei wang,5 xinming niu,1,2 and feng niu 3,4 1state key laboratory of shale oil and gas enrichment mechanisms and e. Multistage completion solutions baker hughes, a ge company.
It commonly occurs in association with crude oil merriamwebster. Zoback abstract we performed an integrated study of multistage hydraulic fracture stimulation of two parallel horizontal wells in the bakken formation in the williston basin, north dakota. Case history fracpoint completion system isolated openhole. Aaron burtons career has been focused on the completion of shales and similar unconventional plays that require multistage hydraulic fracturing. Secondary fractures can be created by multistage fracturing along a. The echo dc multistage fracturing system is a hydraulic fracturing cartridge and sleeve system designed for open hole or cemented completions. Evaluating hydraulic fracture propagation in a shallow sandstone interval, south texas epa hydraulic fracturing technical workshop. Hydraulic fracturing, along with horizontal drilling technology, helps energy companys to tap previously unobtainable sources of the natural gas from shale. Evaluating hydraulic fracture propagation in a shallow.
For initial completions and hydraulic fracturing in new wells or restimulation and refrac campaigns in mature fields, you can trust schlumberger for the most effective services and. The fracpoint portfolio contains singleentry and multipleentry sleeve options for cemented and openhole applications. In this paper, the effect of local changes in the stressstrain state of rocks is analyzed, and an appropriate approach is proposed for modeling the geometry of hydraulic fractures on horizontal wells under conditions of a dense. Optimal perforating design for hydraulic fracturing and. Fracpoint ballactivated multistage fracturing systems. Application of multistage fracturing of horizontal wells.
The multistage packer was designed to overcome the limitations of adapting commoditized productionstyle mechanical packers to the harsh environment of hydraulic proppantbased fracturing. Hydraulic fracturing, along with horizontal drilling technology, helps energy companys to tap previously unobtainable sources of the natural gas from shale natural gas colourless, highly flammable gaseous hydrocarbon consisting primarily of methane and ethane. Approximately 500 wells, dating from 2005 to 2010, each with more than. Multistage fracturing system gryphon oilfield solutions. Modeling of fault reactivation and induced seismicity. Optimizing fracture spacing and maximizing fracture length are critical methods for improving hydraulic fracturing treatment.
1362 1263 456 727 869 956 785 417 1351 1103 1344 1257 1508 1304 1586 356 125 817 1597 856 480 62 379 82 1063 176 427 1622 1160 1118 916 716 1300 1487 1315 1273 1467 11 769 916 400 1076 1165 1113 394