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DHCI

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Fraction of new wells with <span class="search-highlight">DHCI</span> as function of completion year.
Published: 25 May 2022
Figure 3 Fraction of new wells with DHCI as function of completion year. More
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209491-MS
...Figure 3 Fraction of new wells with DHCI as function of completion year. ...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 14–15, 2014
Paper Number: SPE-169782-MS
... Abstract Downhole Continuous Injection (DHCI) Systems are increasingly being installed in wells for the delivery of a range of chemicals, including application-specific formulations and multi-component chemicals. Although costly, these systems offer the advantage of controlling chemical doses...
Proceedings Papers

Paper presented at the Offshore Technology Conference Brasil, October 29–31, 2019
Paper Number: OTC-29958-MS
...Abstract Abstract Downhole chemical injection (DHCI) systems provide precise wellbore production chemical management by pumping down chemicals via dedicated injection lines. Worldwide installation of DHCI systems has steadily increased as a large proportion of high-pressure, high-temperature...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 14–15, 2014
Paper Number: SPE-169783-MS
... Abstract Downhole Continuous Chemical Injection (DCI) systems, including both Downhole Continuous Injection systems (DHCI) and Gas Lift Chemical injection (GLI) are increasingly being installed in new wells for the application of a range of chemicals. These systems have one or more check valves...
Journal Articles
SPE Prod & Oper 32 (01): 73–85.
Paper Number: SPE-179895-PA
Published: 20 October 2016
... to be a low-frequency option because of low-to-medium scaling potential. Downhole continuous injection (DHCI) of scale inhibitor will be applied to protect the GLV, DHSV, and upper completion from SrSO 4 and possible CaCO 3 scaling to maintain stable production and well integrity. The DHCI valves...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Scale, May 30–31, 2012
Paper Number: SPE-154967-MS
... for downhole chemical injection (DHCI); however, in some cases the equipment has not been fully qualified yet. Application of DHCI is a complex task. It involves the completion and well designs, well chemistry, topside system and the chemical dosage system of the topside process. The chemical...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 27–30, 1998
Paper Number: SPE-49030-MS
... hydrocarbon indicators (DHCIs), into the process. Results from risked projects should be understood and tracked closely over time to facilitate adjustments and enhancements to the methods. correlation spe 49030 risk and uncertainty assessment guideline knowledge management thickness...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190712-MS
... Injection (DHCI) systems, evaporation has been suspected in a number of incidents in the field (Hustad 2014, Olsen 2011 ). These are primarily related to gas pockets forming in the upper section of the injection line. Chemical qualification tests have been introduced to assess the susceptibility...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210140-MS
... assurance problems. Downhole chemical injection (DHCI) has been available to the industry from earliest times with the simplest deployment performed via injection of treating chemical into the annulus of producer wells. The technique has advanced somewhat across the intervening years and ‘backside...
Proceedings Papers

Paper presented at the SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, April 24–27, 2017
Paper Number: SPE-187975-MS
... inhibition Introduction A downhole chemical injection (DHCI) system provides precise wellbore chemical management by pumping chemicals via dedicated injection lines. The system brings economic benefits over long-term operation due to significantly lower operating costs, high reliability and integrity...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 11–12, 2016
Paper Number: SPE-179895-MS
... will probably form at high WC DHCI is recommended. Scale inhibitor injection upstream choke/process. Possible acid removal DHSV 1.5–2.0 10–130 Scale less likely DHCI is recommended GLV 1.1 0 No scale None Top perforation 1.0 0 Reservoir 1.0 0 Equilibrium Formation water...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209501-MS
... of a drawdown reduction were evaluated using Nodal Analysis software. The analysis showed that the resulting reduction of production curtails oil production too much to economically justify choking the well compared to the cost removing the scale. Recomplete Well with Downhole Chemical Injection (DHCI...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190733-MS
... conditions. The seawater selected is a typical North seawater with composition in Appendix 1 . Stage 2: Thermal stability simulating down-hole chemical injection (DHCI) Scale inhibitors are injected through a DHCI in the majority of the cases as "as is" products. When the inhibitor reaches...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209510-MS
..., and scale was considered a plausible cause of the malfunction. Downhole continuous injection (DHCI) of a SI was started, which prevented further decline but obviously did not recover the productivity already lost. A squeeze campaign was planned for all 5 wells using an acidic DiethyleneTriamine Penta...
Proceedings Papers

Paper presented at the SPE Hydrocarbon Economics and Evaluation Symposium, March 26–28, 1995
Paper Number: SPE-30039-MS
.... Geometric focusing in migration. 6. Acquisition or processing artifact. Characteristics of direct hydrocaJbon indicators (DHCIs) are: I. Hat spot 2. Phase change 3. Appropriate peak/trough relationship 4. Dimming of the rcflel.1ors helow the anomaly. 5. Loss of high frcquenl data helow the anomaly. 6...

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