Wettability And Its Effect On Oil Recovery Pdf

wettability and its effect on oil recovery pdf

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Agus Budi Purnomo , PhD. Dody Prayitno. Gatot Budi Santoso , M.

Iranian Journal of Oil and Gas Science and Technology

Morrow, Norman R.. Distinguished Author Series articles are general, descriptiverepresentations that summarize the state of the art in an area of technology bydescribing recent developments for readers who are not specialists in thetopics discussed. Written by individuals recognized as experts in the area, these articles provide key references to more definitive work and presentspecific details only to illustrate the technology. Purpose: to informthe general readership of recent advances in various areas of petroleumengineering. Reservoir wettability is determined by complex interface boundary conditionsacting within the pore space of sedimentary rocks. These conditions have adominant effect on interface movement and associated oil displacement. Wettability is a significant issue in multiphase flow problems ranging from oilmigration from source rocks to such enhanced recovery processes as alkalineflooding or alternate injection of CO2 and water.

Efforts to enhance oil recovery through wettability alteration by nanoparticles have been attracted in recent years. However, many basic questions have been ambiguous up until now. Nanoparticles penetrate into pore volume of porous media, stick on the core surface, and by creating homogeneous water-wet area, cause to alter wettability. This work introduces the new concept of adding ZnO nanoparticles by an experimental work on wettability alteration and oil recovery through spontaneous imbibition mechanism. Laboratory tests were conducted in two experimental steps on four cylindrical core samples three sandstones and one carbonate taken from a real Iranian heavy oil reservoir in Amott cell.

Wettability and Its Effect on Oil Recovery

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In this study, the effect of initial water saturation on the oil recovery for carbonate rocks is investigated using spontaneous imbibition experiments. The experiments are performed using 20 times diluted sea water as imbibing fluid and the sea water as initial water. These results help to identify the active cations in the wettability alteration process of carbonate rocks during the low-salinity water injection. A mechanism is proposed to describe the effect of initial water saturation on the oil recovery by low-salinity water injection. The impact of initial water saturation on the wettability alteration might be positive or negative depending on its value and the rock permeability. The development of technology in the recent century has increased the consumption of the fossil fuels in the world, since the oil production from many reservoirs have been declined, the oil companies are interested to invest for the technologies that enhance the oil recovery EOR technology. Performance of the EOR techniques significantly depends on the reservoir rock and fluids properties.

PROSIDING SEMINAR NASIONAL CENDEKIAWAN

The datasets that support the findings of this study are available from [Abu Dhabi National Oil Company, ADNOC] but restrictions apply to the availability of these datasets, which were used under license for the current study, and so are not publicly available. We used X-ray micro-tomography to image the in situ wettability, the distribution of contact angles, at the pore scale in calcite cores from a producing hydrocarbon reservoir at subsurface conditions. The contact angle was measured at hundreds of thousands of points for three samples after twenty pore volumes of brine flooding. The hypothesized cause of wettability alteration by an adsorbed organic layer on surfaces contacted by crude oil after primary drainage was observed with Scanning Electron Microscopy SEM and identified using Energy Dispersive X-ray EDX analysis.

Physics of Porous Media View all 15 Articles. Wettability alteration was proposed as one of the enhanced oil recovery EOR mechanisms for nanoparticle fluid nanofluid flooding. The effect of nanoparticle adsorption on wettability alteration was investigated by wettability index measurement of Berea sandstone core injected with nanofluids and by contact angle measurement of a glass surface treated with nanofluids. Nanoparticle adsorption was studied by single phase coreflooding with nanofluids in Berea sandstone. The adsorption isotherm and the impact of adsorption on the effective permeability were investigated by measuring the effluent nanoparticle concentration and differential pressure across the core.

 Рано или поздно, - продолжала она, - народ должен вверить кому-то свою судьбу. В нашей стране происходит много хорошего, но немало и плохого. Кто-то должен иметь возможность оценивать и отделять одно от другого. В этом и заключается наша работа.

Глаза ее были затуманены. - Танкадо успел отдать его за мгновение до смерти. Все были в растерянности. - Ключ… - Ее передернуло.  - Коммандер Стратмор отправил кого-то в Испанию с заданием найти ключ. - И что? - воскликнул Джабба.  - Человек Стратмора его нашел.

Беккер вышел в коридор. Нет проблем. А как же проваливай и умри. ГЛАВА 36 Ручное отключение. Сьюзан отказывалась что-либо понимать.

Introduction

Поэтому я хочу узнать мнение специалиста. - Что ж, - сказал Джабба, - мне неприятно первым тебя разочаровать, но твои данные неверны. - Ты так думаешь. - Могу биться об заклад.  - Он откусил кусок пирога и заговорил с набитым ртом.

Фонтейн заставил Мидж и Бринкерхоффа стоять, пока сам он молча совершал свой обычный ритуал заваривания кофе сорта Гватемальская ява. Затем он сел за письменный стол и начал их допрашивать, как школьников, вызванных в кабинет директора, а они по-прежнему стояли. Говорила Мидж - излагая серию необычайных событий, которые заставили их нарушить неприкосновенность кабинета. - Вирус? - холодно переспросил директор.  - Вы оба думаете, что в нашем компьютере вирус.

Одному несчастному азиату стало плохо. Я попробовал оказать ему помощь, но все было бесполезно. - Вы делали ему искусственное дыхание. На лице старика появилось виноватое выражение. - Увы, я не знаю, как это делается. Я вызвал скорую.

 Нет. Пусть остается.  - Стратмор кивнул в сторону лаборатории систем безопасности.

Стратмор вздохнул. - У Танкадо наверняка была при себе копия ключа в тот момент, когда его настигла смерть. И я меньше всего хотел, чтобы кто-нибудь в севильском морге завладел ею. - И вы послали туда Дэвида Беккера? - Сьюзан все еще не могла прийти в.  - Он даже не служит у .

 - Стратмор остановился и повернулся к Сьюзан.

1 COMMENTS

Germain V.

REPLY

An understanding of the mechanisms by which oil is displaced from porous media requires the knowledge of the role of wettability and capillary forces in the displacement process.

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