Exhibit 5.3

	OFFICE ADDRESS	18-20, rue Edward Steichen L-2540 LUXEMBOURG
	TELEPHONE	+352 466 230
	FAX	+352 466 234
	INTERNET	loyensloeff.lu

To:

Schlumberger Investment S.A.

5, Place de la Gare

L-1616 Luxembourg

Grand Duchy of Luxembourg

RE	Luxembourg law legal opinion – Schlumberger Investment S.A. – S-3 Registration Statement
REFERENCE	70135624

Luxembourg, 8 May 2023

Dear Sir or Madam,

1 INTRODUCTION

We have acted as your special legal counsel on certain matters of Luxembourg law in respect of the Company. We render this opinion regarding the filing of a Registration Statement (as defined below).

2 DEFINITIONS

2.1 Capitalised terms which are not otherwise defined herein are used as defined in the Schedules to this opinion letter.

2.2 In this opinion letter:

Act means the United States Securities Act of 1933, as amended.

Articles means the consolidated text of the articles of association of the Company as at 2 September 2011 drawn up by Maître Martine Schaeffer, notary residing in Luxembourg, Grand Duchy of Luxembourg.

Authorisation means the authorisation of the board of directors of the Company covering the issuance of the Debt Securities.

All services are provided by Loyens & Loeff Luxembourg S.à r.l., a private limited liability company (société à responsabilité limitée) having its registered office at 18-20, rue Edward Steichen, L-2540 Luxembourg, Luxembourg, registered with the Luxembourg Register of Commerce and Companies Luxembourg (Registre de Commerce et des Sociétés, Luxembourg) under number B 174.248. All its services are governed by its General Terms and Conditions, which include a limitation of liability, the applicability of Luxembourg law and the competence of the Luxembourg courts. These General Terms and Conditions may be consulted via loyensloeff.lu.

AMSTERDAM    ●    BRUSSELS    ●    LUXEMBOURG    ●    ROTTERDAM    ●    HONG KONG

LONDON    ●    NEW YORK    ●    PARIS    ●    SINGAPORE    ●    TOKYO    ●    ZURICH

Company means Schlumberger Investment S.A., a public limited liability company (société anonyme) organised under the laws of Luxembourg with registered office at 5, Place de la Gare, L-1616 Luxembourg, and registered with the RCS under number B 163.122.

Deed of Incorporation means the deed of incorporation of the Company dated 18 August 2011 and drawn up by Maître Martine Schaeffer, notary residing in Luxembourg.

Debt Securities means the senior unsecured debt securities to be issued by the Company, guaranteed by the Guarantor and described in detail in the prospectus dated 8 May 2023 which forms part of the Registration Statement.

Excerpt means an excerpt pertaining to the Company delivered by the RCS dated 5 May 2023.

Guarantor means Schlumberger Limited a public limited company organised under the laws of Curaçao and entered into the Curaçao Commercial Register with company number 1674.

Insolvency Proceedings means bankruptcy (faillite), composition with creditors (concordat préventif de la faillite), suspension of payments (sursis de paiements), controlled management (gestion contrôlée), insolvency, liquidation, dissolution, reorganisation, restructuring or the appointment of a temporary administrator (administrateur provisoire) and any similar Luxembourg or non-Luxembourg proceedings, regimes or officers relating to, or affecting, the rights of creditors generally.

Insolvency Regulation means the Regulation (EU) No 2015/848 on insolvency proceedings, as amended.

Luxembourg means the Grand Duchy of Luxembourg.

RCS means the Luxembourg Register of Commerce and Companies (Registre de Commerce et des Sociétés).

RCS Certificate means a certificate of absence of a judicial decision (certificat de non-inscription d’une décision judiciaire) pertaining to the Company, delivered by the RCS on 5 May 2023, with respect to the situation of the Company as at 4 May 2023.

Registration Statement means the Form S-3 automatic shelf registration statement under the Act dated 8 May 2023, to be filed with the SEC by the Guarantor and the Company on or about the date of this opinion letter.

Relevant Date means the date of the Registration Statement and the date of this opinion letter.

SEC means the United States Securities and Exchange Commission.

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3 SCOPE OF INQUIRY

3.1 For the purpose of rendering this opinion letter, we have only examined and relied upon electronically transmitted copies of the Registration Statement and electronically transmitted copies of the Articles, the Excerpt and the RCS Certificate.

3.2 We have not reviewed the prospectus or any other documents incorporated by reference or referred to in the Registration Statement and therefore our opinions do not extend to such documents.

4 NATURE OF OPINION

4.1 This opinion letter speaks as of the date hereof and we only express an opinion on matters of Luxembourg law in force on the date of this opinion letter, excluding unpublished case law. We undertake no obligation to update it or to advise of any changes in such laws or case law, their construction or application.

4.2 Except as expressly stated in this opinion letter, we do not express an opinion on public international law or on the rules of, or promulgated under, any treaty or by any treaty organisation or European law (save for rules implemented into Luxembourg law or directly applicable in Luxembourg), on regulatory and tax matters (including EMIR, AIFMD, MiFID II, MiFIR, SFTR, SFDR, the Securitisation Regulation and DAC 6 (including, in each case, their respective EU and national delegated or implementing legislation or regulation)), as well as on transfer pricing, competition, GDPR, accounting or administrative law, sanction laws and regulations or as to the consequences thereof

4.3 Our opinion is strictly limited to the matters stated herein. We do not express any opinion on matters of fact, on the commercial and other non-legal aspects of the transactions contemplated by the Registration Statement or the Debt Securities and on any representations, warranties or other information included in the Registration Statement and any other document examined in connection with this opinion letter, except as expressly stated in this opinion letter. We have made no investigation in the Luxembourg register of beneficial owners.

4.4 In this opinion letter Luxembourg legal concepts are sometimes expressed in English terms and not in their original French or German terms. The concepts concerned may not be identical to the concepts described by the same English term as they exist under the laws of other jurisdictions. In addition, for the purpose of different areas of Luxembourg law, for instance tax law, a term may have a different meaning than for the purpose of other areas of Luxembourg law. The meaning to be attributed to the concepts described by the English terms shall be the meaning to be attributed to the equivalent Luxembourg concepts under the relevant area of Luxembourg law.

4.5 This opinion letter may only be relied upon under the express condition that any issue of interpretation or liability arising hereunder will be governed by Luxembourg law and be brought exclusively before the courts of the district of Luxembourg-City.

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4.6 This opinion letter is issued by Loyens & Loeff Luxembourg SARL and may only be relied upon under the express condition that any liability of Loyens & Loeff Luxembourg SARL is limited to the amount paid out under its professional liability insurance policies. Only Loyens & Loeff Luxembourg SARL can be held liable in connection with this opinion letter.

5 OPINIONS

The opinions expressed in this paragraph 5 (Opinions) should be read in conjunction with the assumptions set out in Schedule 1 (Assumptions) and the qualifications set out in Schedule 2 (Qualifications). On the basis of these Assumptions and subject to these Qualifications and any factual matters or information not disclosed to us in the course of our investigation, we are of the opinion that as at the date of this opinion letter:

5.1 Corporate status

The Company is a public company limited by shares (société anonyme), duly incorporated and validly existing under Luxembourg law for an unlimited duration.

5.2 Due authorization

The Debt Securities, if and when the issue and the amount of such Debt Securities have been duly authorised by the board of directors of the Company, will be duly authorised according to Luxembourg laws applicable to commercial companies generally.

6 ADDRESSEE

This opinion letter is addressed to you and may only be relied upon by you in connection with the transactions to which the Registration Statement and the Debt Securities relate and may not be disclosed to and relied upon by any other person without our prior written consent.

We hereby consent to the filing of this opinion letter as an Exhibit 5.3 to the Registration Statement. In giving this consent, we do not admit that we are in the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the SEC.

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Yours faithfully,

Loyens & Loeff Luxembourg SARL

/s/ Judith Raijmakers	/s/ Anne-Marie Nicolas
Judith Raijmakers1	Anne-Marie Nicolas2

¹  Acting as representative (mandataire) of Loyens & Loeff Luxembourg SARL.

²  Acting as representative (mandataire) of Loyens & Loeff Luxembourg SARL.

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Schedule 1

ASSUMPTIONS

The opinions in this opinion letter are subject to the following assumptions:

1 DOCUMENTS

1.1 All original documents are authentic, all signatures (whether handwritten or electronic) are genuine and were inserted or agreed to be inserted by the relevant individual, and all copies are complete and conform to the originals.

1.2 The information contained and the statements made in the Excerpt and the RCS Certificate are true, accurate and complete at the Relevant Date.

2 INCORPORATION, EXISTENCE, CORPORATE POWER

2.1 There were no defects in the incorporation process of the Company (not appearing on the face of the Deed of Incorporation). The Articles are in full force and effect on the Relevant Date.

The Company has its central administration (administration centrale) and its centre of main interest (as described in the Insolvency Regulation) in Luxembourg and does not have an establishment (as described in the Insolvency Regulation) outside Luxembourg.

2.2 The Company complies with and adheres to all laws and regulations on the domiciliation of companies.

2.3 The issue of the Debt Securities and the execution, entry into, performance and filing by the Company of the Registration Statement, and the transactions in connection therewith are (a) in its corporate interest, (b) with the intent of pursuing profit (but lucratif) and (c) serving the corporate object of the Company.

2.4 The Company will be validly existing under Luxembourg law at the date of the Authorisation.

3 AUTHORISATION

The Company is not and will not be under any contractual obligation to obtain the consent, approval, co-operation, permission or otherwise of any third party or person in connection with the execution of, entry into, and performance of its obligations under, the Registration Statement and the issuance of the Debt Securities.

4 VALIDITY

Under any applicable laws (other than Luxembourg law, to the extent opined upon herein) the Debt Securities and all obligations in connection therewith and under the Registration Statement (and the documents in connection therewith) are legal, valid, binding upon it and enforceable as a matter of all relevant laws (other than, but only to the extent expressly opined herein, Luxembourg law) and, in particular, their expressed governing law.

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5 MISCELLANEOUS

5.1 The Company will issue the Debt Securities and execute and perform its obligations under the Registration Statement (and all documents in connection therewith) in good faith, for the purpose of carrying out its business and without any intention to defraud or deprive of any legal benefit any other party (including third party creditors) or to circumvent any mandatory law, regulation of any jurisdiction or contractual arrangements.

5.2 There are no provisions in the laws of any jurisdiction (other than Luxembourg) or in the documents mentioned in the Registration Statement, which would adversely affect, or otherwise have any negative impact on this opinion letter.

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Schedule 2

QUALIFICATIONS

The opinions in this opinion letter are subject to the following qualifications:

1 INSOLVENCY

1.1 This opinion letter is subject to all limitations resulting from the application of Luxembourg public policy rules, overriding statutes and mandatory laws as well as to all limitations by reasons of Insolvency Proceedings.

2 ACCURACY OF INFORMATION

2.1 Corporate documents of, and court orders affecting, the Company may not be available at the RCS forthwith upon their execution and filing and there may be a delay in the filing and publication of the documents or notices related thereto. We express no opinion as to the consequences of any failure by the Company to comply with its filing, notification, reporting and publication obligations.

2.2 Documents relating to a Luxembourg company the publication of which is required by law will only be valid towards third parties from the day of their publication with the Electronic Register of Companies and Associations (Recueil Electronique des Sociétés et Associations), unless the company proves that the relevant third parties had prior knowledge thereof. Third parties may however rely upon such documents which have not yet been published. For 15 days following their publication, such documents will not be valid towards third parties who prove the impossibility for them to have knowledge thereof.

2.3 The Articles, the Excerpt and the RCS Certificate do not constitute conclusive evidence whether or not an administrative dissolution without liquidation procedure, a winding-up, administration petition or order has been presented or made, a receiver has been appointed, an arrangement with creditors has been proposed or approved or any other Insolvency Proceedings have commenced.

3 INCORPORATION, EXISTENCE AND CORPORATE POWER

Our opinion that the Company exists is based on the Articles, the Excerpt and the RCS Certificate (which confirms, in particular, that no an administrative dissolution without liquidation procedure, no judicial decision in respect of bankruptcy (faillite), composition with creditors (concordat préventif de la faillite), suspension of payments (sursis de paiements), controlled management (gestion contrôlée), judicial liquidation (liquidation judiciaire) or the appointment of a temporary administrator (administrateur provisoire) pertaining to the Company have been registered with the RCS.

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4 ENFORCEABILITY

The opinions expressed herein may be affected by general principles and defences under Luxembourg law, such as the principles of reasonableness and fairness, good faith, abuse of rights, modification on grounds of unforeseen circumstances, limitations by criminal law, undue influence, force majeure, the right to suspend performance as long as the other party is in default in respect of its obligations, the right to set-off and the right to dissolve a transaction upon default by the other party.

5 MISCELLANEOUS

5.1 We express no opinion on general defences under Luxembourg law, such as duress, deceit (dol) or mistake (erreur).

5.2 A Luxembourg company may only enter into transactions which are in its corporate interest. The question of whether or not a transaction contemplated by any of the documents covered by this opinion is in a company’s corporate interest, is largely dependent on factual considerations and the responsibility for such assessment is that of the board of directors or managers of the relevant company. If any such transaction is subsequently held to be contrary to a company’s corporate interest, it could be held to be null and void.

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