Geomechanics in Shale Gas DevelopmentFull description
Descripción completa
YacimientosDescripción completa
Full description
GN has the automatically production line for shale shaker screens, include CNC punching machine, robot welding,injection molding machine. This will help GN to make high quality screens with consistent quality.
With the worldwide network branches a
Descripción: Shale Oil Economical Evaluation Argentina Location General Information Investors Blocks Companies Petrogas
Schlumberger Successes in Shale PlayDescripción completa
00-0-kkkDescrição completa
Believe me, i hate to run this procedures but the hell i need thisFull description
Descripción: Shale Shakers Zaranda
Full description
Shale gas and tight oil from low permeability reservoirs have provided a new lease on life for U.S. oil and gas production. The question is, how sustainable is shale production in the long term giv...
Schlumberger Successes in Shale Play
IP Advanced - Clay and Shale Advanced Determination of Clay and Shale calculations of Interactive PetrophysicsFull description
deliverability
H ALE
A
PP RT N I TY
( Nex Nextt Res esou ou ces es? ???)
The defini t ion of
as shale is underst ood in US
Complete geochemistry and laborat laborat ory analysis analysis are are definit ely required t o confir m t he arameter of as shale otent ial One (1 ) D Bas Basin in Modeling ar e needed needed t o check check t he gas shale mat ur it y distribution Seis eismi mi c int erpret ati on approach approach are also also requir ed to complet e and and estt ablish th es t he e gas gas shale shale play map, and also also t o mak e prospec prospectt s priori t y I t is an expens expensive ive project projec t but .. “
,
”
The defini t ion of
as shale is underst ood in US
Complete geochemistry and laborat laborat ory analysis analysis are are definit ely required t o confir m t he arameter of as shale otent ial One (1 ) D Bas Basin in Modeling ar e needed needed t o check check t he gas shale mat ur it y distribution Seis eismi mi c int erpret ati on approach approach are also also requir ed to complet e and and estt ablish th es t he e gas gas shale shale play map, and also also t o mak e prospec prospectt s priori t y I t is an expens expensive ive project projec t but .. “
,
”
SHALE GAS
Schlumberger Schlum berger – Illino Illinois is , 2007
CHARACTERI STI CS OF SHALE GAS
Schlumberger – Illinois , 2007
CHARACTERI STI CS OF SHALE GAS THIN SECTION
SEM
Schlumberger – Illinois , 2007
CORE
GAS SHALE PLAY : unconvent ion al r esou r ces
• Biogenic Gas : f orm ed at shallow dept h and low t emperat ure by anaerobi c bact erial decomp osit ion of sediment ary organic mat t er
• Thermogenic Gas : f orm ed at high dept h and t emperat ure by t hermal cr ack in of oil int o as
What I s Gas Shale Play ?
TOC r ich
Overmature condition
GAS CONTENT In shale reservoirs, gas is stored in three ways : • as free gas within the rock pores (1) and natural fractures (2) • as adsorbed gas on organic material (3)
These different storage mechanism affect the speed and efficiency of gas production Determination of gas content has relied on desorption studies of core and cutting samples by onsite or laboratory test
OGI P = Free Gas + Adsor bed Gas
TECHNOLOGY : Hydr aul ic Fr act ur ing Shales are so t ight t hat gas t ypically flow s only through fr act ures
Barnett Shale
Fracing is used t o init iate pr oduction in low er perm eabilit y reservoir and rest imulate production in older w ells
I n many cases, flow from rest imulati on has increased to in it ial rat es or, to Restimulation
w ell had previously experienced
Well : Mitchell Energy 2 Boyd Townsite
TECHNOLOGY : Hor izont al Dr illing
• Gas shale play reservoi r are mu ch mor e ext ensive in horizontal dim ensions than in ver ca .
• I n area w here lit hologic barrier is thin or absent, horizontal dr illing i s much m ore effective than vert ical
• Mult i w ells from a single pad have cheaper .
GAS SHALE BASI N OF THE US
Marcellus 500 TCF
ew s 97 TCF Haynessville 245 TCF Barnett 20-252 TCF
Woodford 4 TCF
Fayetteville 20 TCF 20 tcf
GLOBAL SHALE GAS RESOURCES POTENTI AL
I m age Log
( Form at ion Micro I m ager)
Example of an image log from a horizontal Barnett well. In adition to the natural fractures (labeled), a large drilling-induced fracture can be seen running along the axis of the borehole (dashed line).
GAS SHALE DI STRI BUTI ON I sopach Map
Mat urit y Map
St ruct ure Map
Gas shale map is combinat ion bet w een isopach map of source rock and m atur it y m ap. Maturi t y map of Barnet t shale doesn’t reflect isopach map due t o complex t hermal histor y There is hydrot hermal event associated w it h Ouachit a Thrust and Mineral Wells fault s
COMPARI SON OF US GAS SHALE PLAYS
Several prerequisites assumption : 1. Avera e TOC : 4 - 12 wt%. 2. Maturity Window : dry gas or overmature condition 3. Minimum Ro: 1.3%. 4. Average Net Thick. : 100 FT. 5. Located in inversion zones for cheaper costs
GAS SHALE LOG FEATURES (1) Green Point Shale
Background resistivity
Green Point Shale
Gas peak 1.6%
Gas peak 5.78%
Several wells shows : • Hi h GR shale • High resistivity • High gas reading in streaks
GAS SHALE LOG FEATURES ( 2) Barnett Shale
Lew is Shale
GAS SHALE LOG FEATURES ( 3)
Schlumberger – Illinois , 2007
MATRI X PERMEABI LI TY
Schlumberger – Illinois , 2007
PRODUCTI ON PREDI CTI ON mu ator or natura y racture s a es
Schlumberger – Illinois , 2007
UEP of Source Rocks Potential (Petroleum System Study –– Medco Libya)
T Shale (45.7 mmbeo/km2)
Th Shale (9.5 mmbeo/km2)
AW Shale (15.4 mmbeo/km2)
M Shale (5.7 mmbeo/km2)
M EDCOENERGI
ToolBox Calculation Method (Source Rocks) Hydrogen Index (HI)
Total Total Organic Content (TOC)
Hydrogen Index (HI)
Total Total Organic Content (TOC) T
Aw Aw
Th Th
M
T
Aw Aw
Th Th
M
Summary of Toolbox Calculation
M EDCOENERGI
T Shale (45.7 mmbeo/km2)
CONCLUSI ON 1. (Therm ogenic) gas shale play is gas accumu lation in shale source rock. 2. Gas shale play charact erized by lar ge areal ext ent , lar ge HC in pl ace, absence of t ru ly dr y holes, high cost and high t echnology. 3. Gas shale play prerequisit es assumpt ion : ( a ) TOC i s 4 – 1 2 w t % , (b) overm ature condition - min. maturit y is 1.3% Ro, (c) net t hickness is 100 f t , and ( d) locat ed in inversion zone for cheaper cost . 3. Gas shale stored in 3 w ays : as fr ee gas in f ract ur es and por es, and as adsorb ed gas on m ineral surf ace. OGI P is accum ulat ion of t hese w ays. 4. Hydraulic fr act urin g and horizontal w ells are t he most im port ant t echnology in gas shal e play. 5. Gas shale play has t rem endous resour ces but not f or t he faint of heart or t he thin of w allet.
