progress and outlook of yanchang integrated ccus ... · 1 6 360,000 t/a co 2 capture project in...

Progress and Outlook of Yanchang Integrated CCUS

Demonstration Project

Shaanxi Yanchang Petroleum (Group) Co., Ltd，China

2018.6.27

Shaanxi Yanchang Petroleum (Group) Co., Ltd is one of four qualified enterprises for oil and gas exploration and production in

China, and also a large integrated energy chemical company aiming at the high–efficiency use of coal, oil and gas. In 2015,

Yanchang became No.380 of Fortune Globe top 500 companies.

Oil & Gas Production Oil Refining Oil & Gas Transportation

Oil & Chemicals Trading

Oil & Gas Exploration

Chemical Engineering Equipment Manufacturing

Engineering Construction Research Development

Coal Mining

Solar Photovoltaic Financial Service

Business of Yanchang Petroleum

Yanchang Petroluem

Part 1 Part 2 Part 3 Part 4

3

PROJECT BACKGROUD

Carbon Emission Reduction is a global Issue

In 2014, China released “China’s National Plan on Climate Change (2014-2020)” ,has pledged to

reduce carbon emission by 45% for per unit GDP

by 2020 from the 2005 level.

In 2015, China signed “U.S.-China Joint Presidential Statement on Climate Change”

In 2016, China signed the “Paris Agreement on Climate Change”


4

PROJECT BACKGROUD

CO2 “Near Zero Emission”in Coal Chemical Industry

Water Shortage during

Water Flooding

Development

Low Permeability

Oilfield Development

PROBLEMS

Yanchang Petroleum is the largest provincialstate-owned enterprises in north-west China. It’sour responsibility to fight against climate change.

Social Responsibility Development Need


5

Advantages

Abundant CO2 Source

Coal Chemical Industry

Good Geological Conditions for Safety Storage

Huge storage capacity in oil reservoir and saline aquifer

CO2-EOR and Storage

CO2-EOR

Source-Sink

Matching

Advantages of Yanchang CCUS Project

Low Cost, High Purity CO2


6

1、Abundant Carbon Dioxide Sources and Huge Storage Space in Ordos Basin

（1）Abundent CO2 Emission Source

More than 100 mtpa CO2 emission in Ordos Basin

（2）Storage Capacity

1.2 billion tonnes of oil reserve is suitable for CO2-EOR,

0.4 billion tonnes of CO2 can be safely sequestrated.

（3）Saline Aquifer

Huge Storage capacity in Saline Aquifer (>1 billion tonnes)

Advantages


7

2、Yanchang’s Unique Source-Sink Advantages

Oilfield DevelopmentOil & Gas Exploration

Coal Chemical PlantsCoal Mining

Advantages

陕北油区、煤化工、燃煤电厂分布图

Yanchang’s business is including multiple coal chemical plants and oil & gas fields,

which is unique source-sink conditions for CCUS project.t


8

1. Low Cost CO2 Capture Technology in Coal Chemical Industry

Project Highlights

CO2 Source: Coal Gasification Process

High Purity: CO2 = 99.6%

Low Capture Cost: <120 Yuan ($19)

Low Transportation Cost

Rectisol Process Location of CO2 Capture and Injection Sites

PROGRESS

T1621

E1621

V1621

P1621

T1601

T1603 T1604

T1605

E1605

E1623

E1622

V1601

E1601E1606

E1604

E1603 P-102

V1603

V1602

E1617C1601E108

非变换气

P1601 P1603/A/B

E1608

S1601

E1610

V1604

P1604

E1618

E1609

E1619

P1605

S1602

E1615A

E1615B

E1620

T1606

P1607

E1617

E1612

V1606

P1606

E1613

V1605

E1614

E1624

去膜分离

P-145

变换气

去甲醇

合成

E1621

非变换气冷却器

E1622

1#甲醇深冷气

V1621

2#水分离器

E1623

3#甲醇深冷气

E1624

4#甲醇深冷气

P1621

甲醇加压泵

E1601

变换气冷却器

T1621

非变换气洗涤塔

T1603

H2S浓缩塔

E1614

H2S馏分换热器

V1606

回流罐

P1606

甲醇深冷气再生回流泵

T1604

甲醇再生塔

E1612

再生塔回流深冷器

V1605

酸性气分离器

E1613

H2S深冷器

E1612

醇水分离器进料换热器

T1605

醇水分离塔

T1606

尾气吸收塔

E1617

醇水分离塔再沸器

V1601

1#水分离器

T1601

变换气洗涤塔

E1606

循环甲醇冷却器

E1603

1#甲醇冷却器

V1602

1#甲醇闪蒸罐

V1603

2#甲醇闪蒸罐

E108

循环气预热器

C1601

循环气压缩机

E1617

N2预冷换热器

E1608/A/B/C

3#贫甲醇冷却器

P1601/A/B

H2S浓缩塔甲醇泵

E1619

贫甲醇冷却器

P1603/A/B

甲醇再生塔给料泵

S1601

富甲醇过滤器

P1604/A/B

贫甲醇泵

P1605/A/B

醇水分离塔给料泵

S1602

富甲醇过滤器

P1607/A/B

尾气洗涤水泵

E1620

废水冷却器

E1618

贫甲醇冷却器

E1609


V1604

贫甲醇储罐

E1604

1#甲醇深冷器

E1605

非变换气冷却器

去硫回收

脱盐水

碱液

去污水

补甲醇

去甲醇灌区

补甲醇

E1615/A/B

醇水分离器进料换热器

E1610/A/B/C/D


E1607

P-1542

E-439

V1607

P-1545

P-1546

E1607

甲醇换热器

V1607

甲醇闪蒸罐


9

In November 2012, a 50,000 t/a CO2 capture facility has been built at Yulin Coal-chemical

Plant. 99.6% purity of CO2 is captured using a Rectisol process, then delivered to injection

sites for CO2-EOR and storage.

50,000 t/a CO2 Capture Project Operated by Yulin Coal Chemical Company

1. Low Cost CO2 Capture Technology in Coal Chemical Industry

PROGRESS


10

2. CO2-EOR Experiment Assessment

Establishing a CO2-EOR assessment system based on physical simulation experiment in formation

conditions.

Test：

Minimum Miscibility Pressure(MMP) Test

CO2-Oil Phase Behavior Test

Influence of CO2 Injection on Reservoir

Influence on CO2-EOR Efficiency

Channeling and Sealing system

Flowing gelatum Modified starch gelatum system Fracture sealing

PROGRESS


11

3. Injection-production Casing String Design and Anti-corrosion Technology

• Injection-production casing string design has been optimized,

• Anti-corrosion technology has been determined as “ordinary steel+ inhibiter”

Production systemInjection system

PROGRESS


12

No. ReservoirGeological Reserves

(104t)

Storage Capacity

(104t)

EOR

(%)

Incremental Oil 𝐏roduction

Tonnes of CO2

Storage

Coefficient

1 杏子川-化子坪区-长2层 1015 265.63 6.99 0.27 0.26

2 靖边-乔家洼-长6 (Jingbian) 931 209.87 4.03 0.18 0.23

3 永宁-永宁油区-长6 1333.69 357.41 10.83 0.40 0.27

4 西区-义吴-长4+5、长6、长7 4754.79 1207.39 9.85 0.39 0.25

5 定边--延10 424 145.83 10.83 0.31 0.34

6 七里村-郭旗西区-长61、62 3110 769.90 8.67 0.35 0.25

7 直罗-埝沟-长2 240 62.42 7.43 0.29 0.26

8 南区-湫沿山-长6 278.6 62.80 10.52 0.47 0.23

9 吴起-油沟-长4、长5（Wuqi） 801 194.25 8.58 0.58 0.56

A new CO2 geological Storage Capacity Assessment System has been established in consideration of interaction between CO2-EOR and Storage. The result shows the effective CO2 storage capacity could be 0.4 billion tonnes in Yanchang oilfield.

4. CO2 geological Storage Capacity Assessment System

PROGRESS


13

5. “Underground—Surface—Atmosphere” CO2 Storage Monitoring System

3D-Seismic Monitoring Vegetation Physiological & Biochemical Analysis

Sample Analysis

PROGRESS

Casing string Monitoring Soil Gas Monitoring Online Monitoring System


14

6. CO2-EOR and Storage Pilot Test

Since September 2012, the total amount of CO2 injection is 87,300 tons.

1、Jingbian CCS Pilot Site

Liquid Production/well: 0.53m3/d — 1.05m3/d

Oil Production/well: 0.17 t/d — 0.33 t/d

Water-cut: 64%

PROGRESS

Pay-zone Depth：1300m-1600m

Injection Pressure: 8.3Mpa

Reservoir Temperature：44℃


15

6. CO2-EOR and Storage Pilot Test


2、Wuqi CCS Pilot Site

PROGRESS


Oil Producton/well: 1.91 t/d — 2.23 t/d

Water-cut decrease: 6.5%

Pay-zone Depth：2000m

Injection Pressure: 9.5Mpa



16

360,000 t/a CO2 Capture Project in Yulin Energy and Chemical Company

The feasibility study of 360,000 t/a CCUS Demonstration Project has been

approved, the project is now in the construction scheme design phase.

7. Yanchang 360,000 t/a Integrated CCUS Demonstration Project

PROGRESS


17

FUTURE PLAN

Phase 1：36万吨/年CCUS示范工程。 360k tons/year CCUS project.

Phase 2：100万吨/年CCUS工业化应用。1 million tons/year CCUS project.

Phase 3：400万吨/年CCUS推广应用。 4 million tons/year CCUS project.

Pipeline（Phase 1）

CO2 Capture Site

CO2 Injection Site（Phase 2）





Well Testing in Yanchang oilfieldWuqi reservoir

Date: 27st June 2018

Vahab Honari

AcknowledgementsProfessor Andrew Garnett; Professor Jim Underschultz; Professor Xingjin Wang

For their contribution and support, UQ would like to acknowledge:

Commonwealth Government of Australia;

ACA Low Emissions Technology Pty Ltd (ACALET).

Disclosure

The UQ-Surat Deep Aquifer Appraisal Project (UQ-SDAAP) is forecasted to run until end April 2019 within total current budget limit of up to AUD$8.1 million. The project is currently funded by the Australian Government, through the CCS RD&D programme, by ACA Low Emissions Technology (ACALET) and by The University of Queensland.

Disclaimer

The information, opinions and views expressed here do not necessarily represent those of The University of Queensland, the Australian Government or ACALET. Researchers within or working with the UQ-SDAAP are bound by the same policies and procedures as other researchers within The University of Queensland, which are designed to ensure the integrity of research. The Australian Code for the Responsible Conduct of Research outlines expectations and responsibilities of researchers to further ensure independent and rigorous investigations.

Research Collaborators:China University of Mining Technology Beijing, Yanchang Petroleum Company,

Thanks also to APLNG, Bridgeport Energy, Shell/QGC and Armour Energy for provision of proprietary data and models for the wider Surat Deep Aquifer Appraisal Project.

Acknowledgements to Schlumberger, Computer Modelling Group and IHS Markit for provision of modelling software

Yanchang oilfield map

Location of CO2 Capture and Injection Sites

CO2 geological Storage Capacity Assessment System

No. ReservoirGeological Reserves

(104t)

Storage Capacity

(104t)

EOR

(%)

Incremental Oil 𝐏roduction

Tonnes of CO2

Storage

Coefficient

1 杏子川-化子坪区-长2层 1015 265.63 6.99 0.27 0.26

2 靖边-乔家洼-长6 (Jingbian) 931 209.87 4.03 0.18 0.23

3 永宁-永宁油区-长6 1333.69 357.41 10.83 0.40 0.27

4 西区-义吴-长4+5、长6、长7 4754.79 1207.39 9.85 0.39 0.25

5 定边--延10 424 145.83 10.83 0.31 0.34

6 七里村-郭旗西区-长61、62 3110 769.90 8.67 0.35 0.25

7 直罗-埝沟-长2 240 62.42 7.43 0.29 0.26

8 南区-湫沿山-长6 278.6 62.80 10.52 0.47 0.23

9 吴起-油沟-长4、长5（Wuqi） 801 194.25 8.58 0.58 0.56

Wuqi CCUS Pilot Site



Oil Production/well: 1.91 t/d — 2.23 t/d

Water-cut decrease: 6.5%

Pay-zone Depth：2000m

Injection Pressure: 9.5MPa


Project objectives

• Design and implement a long pumping test in Wuqi reservoir (tight reservoir with average permeability of 2mD).

• Achieve a relatively large radius of investigation.

• Quantify any existing heterogeneity/fracture in the reservoir.

• Use dynamic reservoir pressure response acquired from this test to de-risk the prediction of carbon storage capacity and injectivity.

Static and History matched dynamic model• Wireline logs were interpreted and grid properties

were upscaled/distributed across the model.

• Experimental data for Wuqi fluid and rock properties were incorporated into the model.

• 4 water injection wells (blue stars) were in theselected area of interest for this study.

• The monthly historical water injection rates wereused in conjunction with history production ratesto calibrate the sub-sector model.

Interference test design trial using two monitoring wells• Well 106 (blue star) was considered as injection well and

101 (located 270 m apart from 106) and 103 (located 325 m apart from 106) (green stars) as the monitoring wells.

• Only well 101, 103 and 106 were shut-in in the model during the test.

• The initial shut-in period of at least 60 days (for base case K=2mD) would be essential to acquire interpretable data at the observation well.

• This needs to follow up with 120 days of injection and 30 days of FO.

• The flow rate needed to be 7 m3/day (44 bblday).

2000m

60 days Initial shut-in relaxation (101 and 103), 120 days INJ at rate of 44 STB/day (7m3/day) and 30 days FO (210 days total)

Initial shut-in period Injection period

Fall

Off

pe

rio

d

Pressure response in injection (106) and two monitoring (101 and 103) wells modelled in Petrel RE

Interpretation of FO pressure response at injection well (106) using IHS WellTest software

• The ROI at injecting well was about 140 m. This is just at the outer edge of water flooded zone. Calculated permeability at the injection well was 0.29 mD.

Chaudhry (2004)

Bourdet (2002)

Flooded zone

Partially flooded

zone

Non-flooded

zone

Fiss

ure

d

syst

em

Tran

siti

on

The INJ data at observation well was matched with the type-curve, resulting in K=0.45 mD and 0.51 mD at well 101 and 103, respectively.

60 days Initial shut-in relaxation (101 and 103), 120 days INJ at rate of 44 STB/day (7m3/day) and 30days FO (210 days total)

Monitoring well 101 Monitoring well 103

Interpretation of INJ pressure response at observation wells (101 and 103) using type-curve matching described by Earlougher (1977).

CO

2In

ject

ion

pe

rio

d

CO

2Fa

ll O

ff p

eri

od

All interference test sequences

60 days Initial shut-in relaxation (101 and 103), 120 days INJ at rate of 44 STB/day (7m3/day) and 30days FO (210 days total) followed by 60 days of CO2 injection (4000 sm3/day) and 90 days of shutin(BHP<=200bar)

CO2 front

Water front

Pressure response in injection (106) and two monitoring (101 and 103) wells modelled in Petrel RE

Interpretation of FO pressure response at injection well (106) using IHS WellTest software

The log-log plot derived from the CO2 injection into the water flooded oil reservoir would potentially predict the gas front and water front as well as the formation (relative) permeability change when CO2 is introduced to the reservoir.

Summary• This is a low permeability reservoir. Thus, any new disturbance to the reservoir

system causes long lasting effects that make the data collection/interpretation challenging.

• The interference test with two monitoring wells sequence with a follow-up CO2

injection test is the most favourable, achieving the test objectives of establishing the reservoir characteristics and constraining dynamic CO2 storage capacity within a reasonable testing time.

• The largest current uncertainty remains to be the bulk reservoir permeability.

• Based on assumptions about permeability the best test options are:Phase 1 Interference test: “A” days initial shut-in relaxation at the monitoring (101 and 103) wells, “B” days INJ at the injection (106) well at rate of 44 STB/day and “C” days FO;

Phase 2 The INJ-FO test will be followed by CO2 INJ and FO with the period of “D” and “E”, respectively.

• Note*: As the test is being run and real time P/T readout is observed, we will be able to determine which permeability scenario is most likely and make decisions on test segment duration accordingly.

Summary (2)

Average permeability (mD) Initial shutin time (day) Injection period (day) Fall off period (day) CO2 injection (day) CO2 falloff period (day) Total testing period (day)

2 60 120 30 60 90 360

5 15 60 30 60 90 255

10 15 30 30 60 90 225

A B C D E F

Thank you

progress and outlook of yanchang integrated ccus ... · 1 6 360,000 t/a co 2 capture project in...

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