effect of production-induced stress field on refracture

Raising the Bar on Refracture Modeling

The model was then validated by history-matching the post-refracturing production of a real refractured well To account for reservoir production depletion and corresponding stress changes before the refracture treatment the prerefracturing production history for the refractured well and three offset wells were matched

Study on The Effect of Production Dynamic to Fault

The subsurface of Groningen gas field composed of several faults The continuous production has been resulting in several micro-seismicity activities particularly for the past decades One of the reasons for the production-induced-seismicity is fault reactivation at depth

Paper about Hydraulic Fracturing

Another example of fracture complexity imaged during the Barnett hydraulic treatments is the effect of stimulating a well that has inadvertently drilled within the depleted zone of a neighboring well rotation in the stress field associated with depletion resulting in a change in the dominant fracture orientation "Refracture

Effect of Formation Stress Distribution on Hydraulic

Effect of production induced change in stress field on the propagation of the secondary fracture was studied by Weng and Siebrits (2007) using a dual-frac PKN model They showed that a refracture treatment can include three phases of refracture propagation reopening and eventually propagating the primary fracture

Effect of Residual Stress on S

Nov 19 2019The fatigue test and residual stress measurement were conducted on specimens before and after the LSP process It was shown that LSP produced a high-amplitude compressive residual stress field on the surface of the specimen After the LSP process the fatigue life limit was increased by 16% and the S-N curve shifted upward

TOUGHNESS VARIATION OF FERROELECTRICS BY

stress and electric fields We consider the case that both the stress and the electric fields are non-uniform The model explores in detail the effect of non-uni- form electric field on the mechanical fracture process The plan of the paper is as follows In the next section

Effect of in situ stress and production

article{osti_127717 title = {Effect of in situ stress and production-induced changes in stress on permeability of naturally fractured reservoirs} author = {Teufel L and Lorenz J} abstractNote = {Fractures are present in almost all hydrocarbon reservoirs but it is only when fractures form an interconnected network that their effect on fluid flow becomes important

Effect of Natural Fractures on Stress Evolution of

4 2 Single Fracture Study Based on the model and physical parameters established in Section 4 1 in this section the focus is on the influence of natural fractures on the stress distribution and steering in the production process of a single fracture in the -section To fully reflect the effect of natural fractures on the stress a conventional model was established without considering the

Experimental Investigation on Propagation Behavior of

In order to consider the similarity between the physical phenomena observed in the field and the results of the experimental model the scaling laws are applied to improve the credibility of the experiment itself [35 36] Parameters of this test are shown in Table 2 where is the vertical stress of the formation is the maximum horizontal principal stress is the minimum horizontal

Production

4D stress changes within the reservoir generally correlate to the locations of the production wells at top reservoir Figure 5 (a) 4D stress across Elgin (b) 4D stress across Franklin and Shearwater The stress changes in Franklin are consistent with the similarly depleted Elgin Field

The effect of residual stresses on brittle and ductile

The effect of a realistic residual stress field on the predicted initiation of brittle and ductile fracture in a pressure and axially loaded circumferentially cracked pipe is examined using finite element analysis micromechanical models of fracture initiation andJ-Q theory The study confirms that residual stresses contribute to the driving force and reduce fracture loads early in

Performance evaluation of water soluble diverter agent and

Oct 30 2018Weng X and Siebrits E 2007 Effect of production-induced stress field on refracture propagation and pressure response 106043 SPE [4] Allison D Curry S and Todd B 2011 Restimulation of wells using biodegradable particulates as temporary diverting agents 149221 CSUG/SPE

The effect of stress state factor on fracture of

Jun 27 2008Experimental results on rock deformation and fracture under true triaxial compression have revealed a misfit between strain state and stress state strain state varying from generalized compression to generalized shear at σ3 ≠ 0 This misfit can lead to data misinterpretation during the stress field reconstruction after unloading Fracture of rock

Effect of micro

Effect of micro-cracks in nonhomogeneous stress field on fracture instability in structural components Bohumir Strnadel * and Vratislav Mareš Center of Advanced Innovation Technologies VŠB-Technical University of Ostrava 17 listopadu 15 708 00 Ostrava-Poruba Czech Republic * Correspondence: Email: bohumir strnadelvsb cz

Nucleation and Arrest of Dynamic Rupture Induced by

3 3 Effect of In Situ Stress and Friction Parameters In this section we evaluate sensitivity of the fault reactivation and final rupture length to the in situ stress and friction parameters for 0‐ and 50‐m reservoir offset 3 3 1 Effect of In Situ Stress and Friction Parameters on Fault Reactivation (0‐ and 50‐m Reservoir Offset)

Research on stress alternation effects and fracture

Research on stress alternation effects and fracture reorientation for refracturing treatment Show all authors Mingjing Lu 1 2 Weng X Siebrits E Effect of production-induced stress field on refracture propagation and pressure response In: SPE hydraulic fracturing technology conference College Station

The Small Effect of Poroelastic Pressure Transients on

3 1 3 Stress Field Plotting the Coulomb stress on a fault dipping toward the producer at θ = 85 as a function of both spatial coordinates Coulomb stress is found to concentrate at the top of the reservoir see Figure 6 Conversely Coulomb stresses on faults dipping away from the producer show elevated levels local to the bottom of the

Effect of welding residual stresson fracture

Effect of residual stress on cleavage fracture toughness was investigated by using the cohesive zone model with a bilinear traction-separationlaw Several cases were studied to understand the effect of residual stresses on the cleavage fracture toughness Results suggest that the behaviour of residual stress is very similar to T-stress

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horizontal principal stress near the wells was reversed under the combined action of the initial hydraulic fracture and the pore pressure gradients caused by production The initiation of the refracture plane would appear normal to the initial fracture plane because of variations in local stress field

Analysis of stress field before refracture treatment

Refracture treatment is an important measure for enhancing or stabilizing well productivity in the low-permeability reservoir Stress field around the well bore and near the fracture formed by previous fracturing has an important influence on determining cranny split and stretch Based on elastic mechanics and fluid-solid coupling theory calculation models were established about initial stress

Effect of Stress Fields on Acoustic Emission during

We investigated the effects of the stress field on acoustic emission (AE) during delayed fracture of glass Delay fracture occurrence was controlled by the Vickers indentation load and kind of glass Delayed fractures of glass were monitored by an AE method After the Vickers hardness test the glass surface was observed and its condition was compared with the AE signals

Study and Application on Improving Hydraulic Fracture

Abstract: Improving the fracture complexity is one of the most important parts to improve the stimulated reservoir volume To understand when and how the complex fracture form in sandstone reservoir a model is established to describe the natural fractured reservoir the stress filed is analyzed by means of numerical simulation method and several treatment technical are

FAST: The Fracturing Acidizing Stimulation Technology

Abstract: Stress shadowing where the stress field around an induced hydraulic fracture reorients from its far field directions by up to 90 degrees is a major factor in designing and executing multiple hydraulic fractured horizontal well completions This is especially true as the number of hydraulic fracture increases for a given lateral length

The stress field especially the horizontal principal stress orientation in the vertically-fractured well determines the azimuth of refracture creation and refracture propagation The paper study systematically the stress characteristics of vertically-fractured gas well and the main factors affecting the change of stress value and the stress