**Source**

**SPE Disciplines**

**Theme**

**Concept Tag**

- amplitude (11)
- annular pressure drilling (7)
- API Spec (5)
- application (14)
- assumption (5)
- borehole (4)
- boundary (4)
- breakout (5)
- bulk modulus (4)
- calculation (7)
- casing and cementing (8)
- casing design (8)
- Completion Installation and Operations (8)
- compressibility (4)
- compressional velocity (5)
- compressive strength (4)
- concentration (5)
- correlation (4)
- coupling (6)
- Courtesy (8)
- criterion (5)
- cross-sectional area (8)
- deformation (6)
- dependence (4)
- design factor (5)
- diameter (9)
- Directional Drilling (3)
- downhole intervention (4)
- drill pipe selection (4)
- drilling fluid chemistry (11)
- drilling fluid formulation (11)
- drilling fluid property (11)
- drilling fluid selection and formulation (11)
- drilling fluids and materials (12)
- drilling operation (10)
- Drillstem Testing (4)
- drillstem/well testing (4)
- drillstring design (4)
- effective stress (4)
- enhanced recovery (6)
- equation (8)
- flow in porous media (5)
- Fluid Dynamics (7)
- fluid loss control (11)
- fracture (8)
- frequency (11)
- glossary (13)
- gradient (6)
- interface (6)
- interpretation (4)
- intervención de pozos petroleros (4)
- knowledge management (85)
- log analysis (16)
- Magnitude (3)
- mechanism (5)
- moduli (5)
- mud weight (6)
- operation (4)
- orientation (5)
- permeability (6)
- Petroleum Engineer (3)
- PetroWiki (36)
- pipe (7)
- pore pressure (7)
- porosity (15)
- presented (13)
- pressure drop (5)
- principal stress (4)
- production control (10)
- production enhancement (4)
- production logging (6)
- production monitoring (10)
- receiver station (4)
- reflection (4)
- requirement (4)
- reservoir (7)
- Reservoir Characterization (38)
- reservoir geomechanics (16)
- Reservoir Surveillance (10)
- resistance (5)
- rock acoustic velocity (4)
- rock property (4)
- sandstone (7)
- saturation (4)
- seismic data (8)
- separation and treating (4)
- shale (4)
- shear stress (4)
- strength (19)
- stress state (5)
- tubing string (4)
- Upstream Oil & Gas (80)
- variation (4)
- well control (7)
- Well Intervention (4)
- well logging (16)
- well planning (4)
- wellbore (6)
- Wellbore Design (15)
- wellbore integrity (12)

**Country**

**Industry**

**Oilfield Places**

**Technology**

**File Type**

Goto

Layer | Fill | Outline |
---|

Theme | Visible | Selectable | Appearance | Zoom Range (now: 0) |
---|

Fill | Stroke |
---|---|

Petrowiki

Technology:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

Petrowiki

Technology:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

...Deformation of a body in the **elastic** range, i.e., recovery to the initial shape is possible when the stress or load is removed...

Petrowiki

Technology:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

... wellbores is important to well design.
For a vertical well drilled in a homogeneous and isotropic **elastic** rock in which one principal stress (the overburden stress, Sv) is parallel to the wellbore axis, th...lling_Engineering
Norbert H., Enzo P., Giuseppe R., Eni A. and Kevin E. 2002. Fiber-Enhanced Visco-**Elastic** Surfactant Fracturing Enables Cost-Effective Screenless Sand Control, European Petroleum Conference...

Stress concentration around the wellbore can create breakouts, fractures, or failures. Understanding the stresses on rocks around wellbores is important to well design. For a vertical well drilled in a homogeneous and isotropic elastic rock in which one principal stress (the overburden stress, Sv) is parallel to the wellbore axis, the effective hoop stress, σθθ, at the wall of a cylindrical wellbore is given by Eq. 1. Here, θ is measured from the azimuth of the maximum horizontal stress, SHmax SHmin is the minimum horizontal stress; Pp is the pore pressure; ΔP is the difference between the wellbore pressure (mud weight) and the pore pressure, and σΔT is the thermal stress induced by cooling of the wellbore by ΔT. At the point of minimum compression around the wellbore (i.e., at θ 0, parallel to SHmax), Eq. 1 reduces to The equations for σθθ; and σzz are illustrated in Figure 1 for a strike-slip/normal faulting stress regime (SHmax Sv SHmin) at a depth of 5 km, where the pore pressure is hydrostatic and both ΔP and σΔT are assumed to be zero for simplicity.

Petrowiki

american geophysical union, azimuth, breakout, concentration, fracture, horizontal stress, knowledge management, mud weight, orientation, principal stress, Reservoir Characterization, reservoir geomechanics, strength, stress concentration, stress orientation, stress state, tensile fracture, Upstream Oil & Gas, vertical well, wellbore, wellbore axis, Wellbore Design, wellbore failure, wellbore integrity, wellbore wall

SPE Disciplines:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

...The bulk **elastic** properties of a material determine how much it will compress under a given amount of external press...ure. This page provides the density, bulk moduli, shear moduli, and **elastic** velocities of various minerals.
There are numerous ways to measure mineral moduli. The most obviou...s is by deforming single crystals. Alternatively, **elastic** velocities can be measured and moduli extracted for zero porosity aggregates. Mineral properties ca...

The bulk elastic properties of a material determine how much it will compress under a given amount of external pressure. This page provides the density, bulk moduli, shear moduli, and elastic velocities of various minerals. There are numerous ways to measure mineral moduli. The most obvious is by deforming single crystals. Alternatively, elastic velocities can be measured and moduli extracted for zero porosity aggregates.

Petrowiki

SPE Disciplines: Reservoir Description and Dynamics > Reservoir Characterization > Reservoir geomechanics (0.77)

Technology:

- Information Technology > Knowledge Management (0.44)
- Information Technology > Communications > Collaboration (0.44)

...uction to stress-strain relationships. They form the foundation for several rock properties such as **elastic** moduli (incompressibility), effective media theory, ...**elastic** wave velocity, and rock strength.
Stress is the force per unit area.
...(1)
The..., however, we will deal only with small deformations and stresses such that the rock remains in the **elastic** region.
Fig. 3 – Deformation of a material under vertical uniaxial stress (σzz) giving rise to ver...

This page provides an introduction to stress-strain relationships. They form the foundation for several rock properties such as elastic moduli (incompressibility), effective media theory, elastic wave velocity, and rock strength. Stress is the force per unit area. The metric units of stress or pressure are N/m2 or Pascals (Pa). Other units that are commonly used are bars, megapascals (MPa), and lbm/in.2 These are illustrated in Figure 1[1].

Petrowiki

SPE Disciplines:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

...**Elastic** waves are comprised of compressional (or P-waves) and shear (or S-waves). In compressional waves, t...uids through which they propagate.
Stress strain relationships in rocks considered only the static **elastic** deformation of materials. By adding the dynamic behavior, we arrive at how ...**elastic** waves propagate through materials. If a body is changing its speed as well as deforming, there will...

Elastic waves are comprised of compressional (or P-waves) and shear (or S-waves). In compressional waves, the particle motion is in the direction of propagation. In shear waves, the particle motion is perpendicular to the direction of propagation. Understanding the velocity of these waves provide valuable information about the rocks and fluids through which they propagate. Stress strain relationships in rocks considered only the static elastic deformation of materials.

Petrowiki

anisotropy, aspect ratio, assumption, axis, compressional velocity, compressional wave, crack porosity, dependence, formulation, Gassmann, knowledge management, log analysis, moduli, particle motion, perpendicular, porosity, propagation, Reservoir Characterization, rock acoustic velocity, shear velocity, shear wave, strain relationship, Upstream Oil & Gas, well logging

SPE Disciplines:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

...le acoustic logging (and surface seismic methods) are based on the theory of wave propagation in an **elastic** medium, as detailed in several sources[18][19][20][13]. The oscillating motion generated by a sound... source (transducer) in an **elastic** medium (rock formation) is called an ...**elastic** wave or acoustic wave (also called head or body waves). Wave theory predicts how an acoustic signal...

Acoustic logging is a subset of borehole-geophysical acoustic techniques. Continuing developments in tool hardware and in interpretation techniques have expanded the utility of these logs in formation evaluation and completion (fracture) design and evaluation. A virtual explosion in the volume of acoustic research conducted over the past 20 years has resulted in significant advances in the fundamental understanding of downhole acoustic measurements. These advances, in turn, have greatly influenced practical logging technology by allowing logging-tool designs to be optimized for specific applications.[1] Acoustic-wave data-acquisition methods cover a broad range of scales from millimeters to hundreds of meters (Figure 1[2]).

Petrowiki

acoustic, acoustic-log data, amplitude, application, borehole, borehole fluid, borehole wall, Courtesy, dispersion, displacement, energy mode, fracture, frequency, knowledge management, log analysis, propagation, Reservoir Characterization, rock formation, shear wave, Stoneley wave, transmitter, travel, Upstream Oil & Gas, wave propagation, well logging

SPE Disciplines:

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

...reasing D/t.
Yield strength collapse is based on yield at the inner wall using the Lamé thick wall **elastic** solution. This criterion does not represent a "collapse" pressure at all. For thick wall pipes (D/t... Plastic Collapse
Transition collapse is obtained by a numerical curve fit between the plastic and **elastic** regimes. The minimum collapse pressure for the plastic-to-...**elastic** transition zone, PT, is calculated with Eq. 4.
...(4)
The factors F and G and ap...

The most important mechanical properties of casing and tubing are burst strength, collapse resistance and tensile strength. These properties are necessary to determine the strength of the pipe and to design a casing string. If casing is subjected to internal pressure higher than external, it is said that casing is exposed to burst pressure loading. Burst pressure loading conditions occur during well control operations, casing pressure integrity tests, pumping operations, and production operations. The MIYP of the pipe body is determined by the internal yield pressure formula found in API Bull. This equation, commonly known as the Barlow equation, calculates the internal pressure at which the tangential (or hoop) stress at the inner wall of the pipe reaches the yield strength (YS) of the material.

Petrowiki

annular pressure drilling, api bull, burst pressure, calculation, casing and cementing, casing design, collapse pressure, criterion, cross-sectional area, design factor, diameter, drillpipe, equation, external pressure, formula, internal pressure, knowledge management, Line Pipe property, pipe, strength, triaxial analysis, triaxial stress, Upstream Oil & Gas, well control, Wellbore Design, wellbore integrity

SPE Disciplines:

- Well Drilling > Wellbore Design > Wellbore integrity (0.88)
- Well Drilling > Casing and Cementing > Casing design (0.67)
- Well Drilling > Pressure Management > Well control (0.54)

- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)

...tter that causes it to resist deformation in volume or shape. Hooke's law describes the behavior of **elastic** materials and states that for small deformations, the resulting strain is proportional to the appli...f geological media the force is acting upon, three types of deformation can result as well as three **elastic** moduli that correspond to each type of deformation.
These four ...**elastic** parameters are interrelated such that any one can be expressed in terms of two others and can also ...

The determination of a reservoir's mechanical properties is critical to reducing drilling risk and maximizing well and reservoir productivity. Acoustic logging can provide information helpful to determining the mechanical properties of reservoir rock. Elasticity is the property of matter that causes it to resist deformation in volume or shape. Hooke's law describes the behavior of elastic materials and states that for small deformations, the resulting strain is proportional to the applied stress. Depending on the mode of the acting geological force and type of geological media the force is acting upon, three types of deformation can result as well as three elastic moduli that correspond to each type of deformation.

Petrowiki

SPE Disciplines:

- Well Drilling > Wellbore Design > Rock properties (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Reservoir geomechanics (1.00)
- Well Drilling > Wellbore Design > Wellbore integrity (0.97)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Open hole/cased hole log analysis (0.82)

Technology:

- Information Technology > Knowledge Management (0.43)
- Information Technology > Communications > Collaboration (0.43)

Thank you!